X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=include%2Flibbb.h;h=74ec678d814a4f70ae288f2aa796f56bac977564;hb=6da69cddc022773a062a039e354d1ad0ed3e32c8;hp=124b11fa8ed5caebc5ff860676af4554e66fd4bf;hpb=e8240f19bd99802e0ccb1738b2d2e630b6eb9087;p=oweals%2Fbusybox.git diff --git a/include/libbb.h b/include/libbb.h index 124b11fa8..74ec678d8 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -17,7 +17,6 @@ #include #include #include -#include #include #include #include @@ -26,12 +25,11 @@ #include #include #include -#include +#include #include #include #include #include -#include #include #include #include @@ -39,10 +37,26 @@ #include #include #include +/* Try to pull in PATH_MAX */ +#include +#include +#ifndef PATH_MAX +#define PATH_MAX 256 +#endif + +#ifdef HAVE_MNTENT_H +#include +#endif + +#ifdef HAVE_SYS_STATFS_H +#include +#endif #if ENABLE_SELINUX #include #include +#include +#include #endif #if ENABLE_LOCALE_SUPPORT @@ -51,22 +65,67 @@ #define setlocale(x,y) ((void)0) #endif -#include "pwd_.h" -#include "grp_.h" -/* ifdef it out, because it may include */ -/* and we may not even _have_ ! */ +#ifdef DMALLOC +#include +#endif + +#include +#include #if ENABLE_FEATURE_SHADOWPASSWDS -#include "shadow_.h" +# include #endif -/* Try to pull in PATH_MAX */ -#include -#include -#ifndef PATH_MAX -#define PATH_MAX 256 +/* Some libc's forget to declare these, do it ourself */ + +extern char **environ; +#if defined(__GLIBC__) && __GLIBC__ < 2 +int vdprintf(int d, const char *format, va_list ap); +#endif +/* klogctl is in libc's klog.h, but we cheat and not #include that */ +int klogctl(int type, char *b, int len); +/* This is declared here rather than #including in order to avoid + * confusing the two versions of basename. See the dirname/basename man page + * for details. */ +char *dirname(char *path); +/* Include our own copy of struct sysinfo to avoid binary compatibility + * problems with Linux 2.4, which changed things. Grumble, grumble. */ +struct sysinfo { + long uptime; /* Seconds since boot */ + unsigned long loads[3]; /* 1, 5, and 15 minute load averages */ + unsigned long totalram; /* Total usable main memory size */ + unsigned long freeram; /* Available memory size */ + unsigned long sharedram; /* Amount of shared memory */ + unsigned long bufferram; /* Memory used by buffers */ + unsigned long totalswap; /* Total swap space size */ + unsigned long freeswap; /* swap space still available */ + unsigned short procs; /* Number of current processes */ + unsigned short pad; /* Padding needed for m68k */ + unsigned long totalhigh; /* Total high memory size */ + unsigned long freehigh; /* Available high memory size */ + unsigned int mem_unit; /* Memory unit size in bytes */ + char _f[20 - 2 * sizeof(long) - sizeof(int)]; /* Padding: libc5 uses this.. */ +}; +int sysinfo(struct sysinfo* info); + + +/* Make all declarations hidden (-fvisibility flag only affects definitions) */ +/* (don't include system headers after this until corresponding pop!) */ +#if __GNUC_PREREQ(4,1) +# pragma GCC visibility push(hidden) +#endif + + +#if ENABLE_USE_BB_PWD_GRP +# include "pwd_.h" +# include "grp_.h" +#endif +#if ENABLE_FEATURE_SHADOWPASSWDS +# if ENABLE_USE_BB_SHADOW +# include "shadow_.h" +# endif #endif -/* Tested to work correctly (IIRC :]) */ +/* Tested to work correctly with all int types (IIRC :]) */ #define MAXINT(T) (T)( \ ((T)-1) > 0 \ ? (T)-1 \ @@ -80,7 +139,7 @@ ) /* Large file support */ -/* Note that CONFIG_LFS forces bbox to be built with all common ops +/* Note that CONFIG_LFS=y forces bbox to be built with all common ops * (stat, lseek etc) mapped to "largefile" variants by libc. * Practically it means that open() automatically has O_LARGEFILE added * and all filesize/file_offset parameters and struct members are "large" @@ -91,6 +150,7 @@ /* CONFIG_LFS is on */ # if ULONG_MAX > 0xffffffff /* "long" is long enough on this system */ +typedef unsigned long uoff_t; # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) /* usage: sz = BB_STRTOOFF(s, NULL, 10); if (errno || sz < 0) die(); */ # define BB_STRTOOFF bb_strtoul @@ -99,6 +159,7 @@ # define OFF_FMT "l" # else /* "long" is too short, need "long long" */ +typedef unsigned long long uoff_t; # define XATOOFF(a) xatoull_range(a, 0, LLONG_MAX) # define BB_STRTOOFF bb_strtoull # define STRTOOFF strtoull @@ -109,11 +170,13 @@ # if UINT_MAX == 0xffffffff /* While sizeof(off_t) == sizeof(int), off_t is typedef'ed to long anyway. * gcc will throw warnings on printf("%d", off_t). Crap... */ +typedef unsigned long uoff_t; # define XATOOFF(a) xatoi_u(a) # define BB_STRTOOFF bb_strtou # define STRTOOFF strtol # define OFF_FMT "l" # else +typedef unsigned long uoff_t; # define XATOOFF(a) xatoul_range(a, 0, LONG_MAX) # define BB_STRTOOFF bb_strtoul # define STRTOOFF strtol @@ -164,7 +227,6 @@ #endif #endif - #if defined(__GLIBC__) /* glibc uses __errno_location() to get a ptr to errno */ /* We can just memorize it once - no multithreading in busybox :) */ @@ -173,118 +235,216 @@ extern int *const bb_errno; #define errno (*bb_errno) #endif -#if defined(__GLIBC__) && __GLIBC__ < 2 -int vdprintf(int d, const char *format, va_list ap); -#endif -// This is declared here rather than #including in order to avoid -// confusing the two versions of basename. See the dirname/basename man page -// for details. -char *dirname(char *path); -/* Include our own copy of struct sysinfo to avoid binary compatibility - * problems with Linux 2.4, which changed things. Grumble, grumble. */ -struct sysinfo { - long uptime; /* Seconds since boot */ - unsigned long loads[3]; /* 1, 5, and 15 minute load averages */ - unsigned long totalram; /* Total usable main memory size */ - unsigned long freeram; /* Available memory size */ - unsigned long sharedram; /* Amount of shared memory */ - unsigned long bufferram; /* Memory used by buffers */ - unsigned long totalswap; /* Total swap space size */ - unsigned long freeswap; /* swap space still available */ - unsigned short procs; /* Number of current processes */ - unsigned short pad; /* Padding needed for m68k */ - unsigned long totalhigh; /* Total high memory size */ - unsigned long freehigh; /* Available high memory size */ - unsigned int mem_unit; /* Memory unit size in bytes */ - char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */ -}; -int sysinfo(struct sysinfo* info); +unsigned long long monotonic_ns(void) FAST_FUNC; +unsigned long long monotonic_us(void) FAST_FUNC; +unsigned monotonic_sec(void) FAST_FUNC; -unsigned long long monotonic_us(void); -unsigned monotonic_sec(void); - -extern void chomp(char *s); -extern void trim(char *s); -extern char *skip_whitespace(const char *); -extern char *skip_non_whitespace(const char *); +extern void chomp(char *s) FAST_FUNC; +extern void trim(char *s) FAST_FUNC; +extern char *skip_whitespace(const char *) FAST_FUNC; +extern char *skip_non_whitespace(const char *) FAST_FUNC; +extern char *strrstr(const char *haystack, const char *needle) FAST_FUNC; //TODO: supply a pointer to char[11] buffer (avoid statics)? -extern const char *bb_mode_string(mode_t mode); -extern int is_directory(const char *name, int followLinks, struct stat *statBuf); -extern int remove_file(const char *path, int flags); -extern int copy_file(const char *source, const char *dest, int flags); +extern const char *bb_mode_string(mode_t mode) FAST_FUNC; +extern int is_directory(const char *name, int followLinks, struct stat *statBuf) FAST_FUNC; +enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */ + FILEUTILS_PRESERVE_STATUS = 1, + FILEUTILS_DEREFERENCE = 2, + FILEUTILS_RECUR = 4, + FILEUTILS_FORCE = 8, + FILEUTILS_INTERACTIVE = 0x10, + FILEUTILS_MAKE_HARDLINK = 0x20, + FILEUTILS_MAKE_SOFTLINK = 0x40, + FILEUTILS_DEREF_SOFTLINK = 0x80, +#if ENABLE_SELINUX + FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x100, + FILEUTILS_SET_SECURITY_CONTEXT = 0x200 +#endif +}; +#define FILEUTILS_CP_OPTSTR "pdRfilsL" USE_SELINUX("c") +extern int remove_file(const char *path, int flags) FAST_FUNC; +/* NB: without FILEUTILS_RECUR in flags, it will basically "cat" + * the source, not copy (unless "source" is a directory). + * This makes "cp /dev/null file" and "install /dev/null file" (!!!) + * work coreutils-compatibly. */ +extern int copy_file(const char *source, const char *dest, int flags) FAST_FUNC; + enum { - ACTION_RECURSE = (1 << 0), - ACTION_FOLLOWLINKS = (1 << 1), - ACTION_DEPTHFIRST = (1 << 2), - /*ACTION_REVERSE = (1 << 3), - unused */ + ACTION_RECURSE = (1 << 0), + ACTION_FOLLOWLINKS = (1 << 1), + ACTION_FOLLOWLINKS_L0 = (1 << 2), + ACTION_DEPTHFIRST = (1 << 3), + /*ACTION_REVERSE = (1 << 4), - unused */ + ACTION_QUIET = (1 << 5), }; extern int recursive_action(const char *fileName, unsigned flags, - int (*fileAction) (const char *fileName, struct stat* statbuf, void* userData, int depth), - int (*dirAction) (const char *fileName, struct stat* statbuf, void* userData, int depth), - void* userData, const unsigned depth); -extern int device_open(const char *device, int mode); -extern int get_console_fd(void); -extern char *find_block_device(const char *path); + int FAST_FUNC (*fileAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), + int FAST_FUNC (*dirAction)(const char *fileName, struct stat* statbuf, void* userData, int depth), + void* userData, unsigned depth) FAST_FUNC; +extern int device_open(const char *device, int mode) FAST_FUNC; +enum { GETPTY_BUFSIZE = 16 }; /* more than enough for "/dev/ttyXXX" */ +extern int xgetpty(char *line) FAST_FUNC; +extern int get_console_fd_or_die(void) FAST_FUNC; +extern void console_make_active(int fd, const int vt_num) FAST_FUNC; +extern char *find_block_device(const char *path) FAST_FUNC; /* bb_copyfd_XX print read/write errors and return -1 if they occur */ -extern off_t bb_copyfd_eof(int fd1, int fd2); -extern off_t bb_copyfd_size(int fd1, int fd2, off_t size); -extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size); +extern off_t bb_copyfd_eof(int fd1, int fd2) FAST_FUNC; +extern off_t bb_copyfd_size(int fd1, int fd2, off_t size) FAST_FUNC; +extern void bb_copyfd_exact_size(int fd1, int fd2, off_t size) FAST_FUNC; /* "short" copy can be detected by return value < size */ /* this helper yells "short read!" if param is not -1 */ -extern void complain_copyfd_and_die(off_t sz) ATTRIBUTE_NORETURN; -extern char bb_process_escape_sequence(const char **ptr); -/* TODO: sometimes modifies its parameter, which - * makes it rather inconvenient at times: */ -extern char *bb_get_last_path_component(char *path); - -int ndelay_on(int fd); -int ndelay_off(int fd); -void xmove_fd(int, int); - - -DIR *xopendir(const char *path); -DIR *warn_opendir(const char *path); - -char *xrealloc_getcwd_or_warn(char *cwd); -char *xmalloc_readlink_or_warn(const char *path); -char *xmalloc_realpath(const char *path); - - -//TODO: signal(sid, f) is the same? then why? -extern void sig_catch(int,void (*)(int)); -//#define sig_ignore(s) (sig_catch((s), SIG_IGN)) -//#define sig_uncatch(s) (sig_catch((s), SIG_DFL)) -extern void sig_block(int); -extern void sig_unblock(int); -/* UNUSED: extern void sig_blocknone(void); */ -extern void sig_pause(void); - - -void xsetgid(gid_t gid); -void xsetuid(uid_t uid); -void xchdir(const char *path); -void xsetenv(const char *key, const char *value); -void xunlink(const char *pathname); -void xstat(const char *pathname, struct stat *buf); -int xopen(const char *pathname, int flags); -int xopen3(const char *pathname, int flags, int mode); -int open_or_warn(const char *pathname, int flags); -int open3_or_warn(const char *pathname, int flags, int mode); -void xpipe(int filedes[2]); -off_t xlseek(int fd, off_t offset, int whence); -off_t fdlength(int fd); - -int xsocket(int domain, int type, int protocol); -void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen); -void xlisten(int s, int backlog); -void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen); -ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to, - socklen_t tolen); -int setsockopt_reuseaddr(int fd); -int setsockopt_broadcast(int fd); +extern void complain_copyfd_and_die(off_t sz) NORETURN FAST_FUNC; +extern char bb_process_escape_sequence(const char **ptr) FAST_FUNC; +/* xxxx_strip version can modify its parameter: + * "/" -> "/" + * "abc" -> "abc" + * "abc/def" -> "def" + * "abc/def/" -> "def" !! + */ +extern char *bb_get_last_path_component_strip(char *path) FAST_FUNC; +/* "abc/def/" -> "" and it never modifies 'path' */ +extern char *bb_get_last_path_component_nostrip(const char *path) FAST_FUNC; + +int ndelay_on(int fd) FAST_FUNC; +int ndelay_off(int fd) FAST_FUNC; +int close_on_exec_on(int fd) FAST_FUNC; +void xdup2(int, int) FAST_FUNC; +void xmove_fd(int, int) FAST_FUNC; + + +DIR *xopendir(const char *path) FAST_FUNC; +DIR *warn_opendir(const char *path) FAST_FUNC; + +/* UNUSED: char *xmalloc_realpath(const char *path) FAST_FUNC; */ +char *xmalloc_readlink(const char *path) FAST_FUNC; +char *xmalloc_readlink_or_warn(const char *path) FAST_FUNC; +char *xrealloc_getcwd_or_warn(char *cwd) FAST_FUNC; + +char *xmalloc_follow_symlinks(const char *path) FAST_FUNC; + + +enum { + /* bb_signals(BB_FATAL_SIGS, handler) catches all signals which + * otherwise would kill us, except for those resulting from bugs: + * SIGSEGV, SIGILL, SIGFPE. + * Other fatal signals not included (TODO?): + * SIGBUS Bus error (bad memory access) + * SIGPOLL Pollable event. Synonym of SIGIO + * SIGPROF Profiling timer expired + * SIGSYS Bad argument to routine + * SIGTRAP Trace/breakpoint trap + * + * The only known arch with some of these sigs not fitting + * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36). + * Dance around with long long to guard against that... + */ + BB_FATAL_SIGS = (int)(0 + + (1LL << SIGHUP) + + (1LL << SIGINT) + + (1LL << SIGTERM) + + (1LL << SIGPIPE) // Write to pipe with no readers + + (1LL << SIGQUIT) // Quit from keyboard + + (1LL << SIGABRT) // Abort signal from abort(3) + + (1LL << SIGALRM) // Timer signal from alarm(2) + + (1LL << SIGVTALRM) // Virtual alarm clock + + (1LL << SIGXCPU) // CPU time limit exceeded + + (1LL << SIGXFSZ) // File size limit exceeded + + (1LL << SIGUSR1) // Yes kids, these are also fatal! + + (1LL << SIGUSR2) + + 0), +}; +void bb_signals(int sigs, void (*f)(int)) FAST_FUNC; +/* Unlike signal() and bb_signals, sets handler with sigaction() + * and in a way that while signal handler is run, no other signals + * will be blocked; syscalls will not be restarted: */ +void bb_signals_recursive_norestart(int sigs, void (*f)(int)) FAST_FUNC; +/* syscalls like read() will be interrupted with EINTR: */ +void signal_no_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; +/* syscalls like read() won't be interrupted (though select/poll will be): */ +void signal_SA_RESTART_empty_mask(int sig, void (*handler)(int)) FAST_FUNC; +void wait_for_any_sig(void) FAST_FUNC; +void kill_myself_with_sig(int sig) NORETURN FAST_FUNC; +void sig_block(int sig) FAST_FUNC; +void sig_unblock(int sig) FAST_FUNC; +/* Will do sigaction(signum, act, NULL): */ +int sigaction_set(int sig, const struct sigaction *act) FAST_FUNC; +/* SIG_BLOCK/SIG_UNBLOCK all signals: */ +int sigprocmask_allsigs(int how) FAST_FUNC; +/* Standard handler which just records signo */ +extern smallint bb_got_signal; +void record_signo(int signo); /* not FAST_FUNC! */ + + +void xsetgid(gid_t gid) FAST_FUNC; +void xsetuid(uid_t uid) FAST_FUNC; +void xchdir(const char *path) FAST_FUNC; +void xchroot(const char *path) FAST_FUNC; +void xsetenv(const char *key, const char *value) FAST_FUNC; +void bb_unsetenv(const char *key) FAST_FUNC; +void xunlink(const char *pathname) FAST_FUNC; +void xstat(const char *pathname, struct stat *buf) FAST_FUNC; +int xopen(const char *pathname, int flags) FAST_FUNC FAST_FUNC; +int xopen3(const char *pathname, int flags, int mode) FAST_FUNC; +int open_or_warn(const char *pathname, int flags) FAST_FUNC; +int open3_or_warn(const char *pathname, int flags, int mode) FAST_FUNC; +int open_or_warn_stdin(const char *pathname) FAST_FUNC; +void xrename(const char *oldpath, const char *newpath) FAST_FUNC; +int rename_or_warn(const char *oldpath, const char *newpath) FAST_FUNC; +off_t xlseek(int fd, off_t offset, int whence) FAST_FUNC; +off_t fdlength(int fd) FAST_FUNC; + +void xpipe(int filedes[2]) FAST_FUNC; +/* In this form code with pipes is much more readable */ +struct fd_pair { int rd; int wr; }; +#define piped_pair(pair) pipe(&((pair).rd)) +#define xpiped_pair(pair) xpipe(&((pair).rd)) + +/* Useful for having small structure members/global variables */ +typedef int8_t socktype_t; +typedef int8_t family_t; +struct BUG_too_small { + char BUG_socktype_t_too_small[(0 + | SOCK_STREAM + | SOCK_DGRAM + | SOCK_RDM + | SOCK_SEQPACKET + | SOCK_RAW + ) <= 127 ? 1 : -1]; + char BUG_family_t_too_small[(0 + | AF_UNSPEC + | AF_INET + | AF_INET6 + | AF_UNIX +#ifdef AF_PACKET + | AF_PACKET +#endif +#ifdef AF_NETLINK + | AF_NETLINK +#endif + /* | AF_DECnet */ + /* | AF_IPX */ + ) <= 127 ? 1 : -1]; +}; + + +int xsocket(int domain, int type, int protocol) FAST_FUNC; +void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen) FAST_FUNC; +void xlisten(int s, int backlog) FAST_FUNC; +void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen) FAST_FUNC; +ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to, + socklen_t tolen) FAST_FUNC; +/* SO_REUSEADDR allows a server to rebind to an address that is already + * "in use" by old connections to e.g. previous server instance which is + * killed or crashed. Without it bind will fail until all such connections + * time out. Linux does not allow multiple live binds on same ip:port + * regardless of SO_REUSEADDR (unlike some other flavors of Unix). + * Turn it on before you call bind(). */ +void setsockopt_reuseaddr(int fd) FAST_FUNC; /* On Linux this never fails. */ +int setsockopt_broadcast(int fd) FAST_FUNC; +int setsockopt_bindtodevice(int fd, const char *iface) FAST_FUNC; /* NB: returns port in host byte order */ -unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port); +unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port) FAST_FUNC; typedef struct len_and_sockaddr { socklen_t len; union { @@ -293,9 +453,10 @@ typedef struct len_and_sockaddr { #if ENABLE_FEATURE_IPV6 struct sockaddr_in6 sin6; #endif - }; + } u; } len_and_sockaddr; enum { + LSA_LEN_SIZE = offsetof(len_and_sockaddr, u), LSA_SIZEOF_SA = sizeof( union { struct sockaddr sa; @@ -308,77 +469,95 @@ enum { }; /* Create stream socket, and allocate suitable lsa. * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6)) - * af == AF_UNSPEC will result in trying to create IPv6, and - * if kernel doesn't support it, IPv4. + * af == AF_UNSPEC will result in trying to create IPv6 socket, + * and if kernel doesn't support it, IPv4. */ -int xsocket_type(len_and_sockaddr **lsap, USE_FEATURE_IPV6(int af,) int sock_type); -int xsocket_stream(len_and_sockaddr **lsap); +#if ENABLE_FEATURE_IPV6 +int xsocket_type(len_and_sockaddr **lsap, int af, int sock_type) FAST_FUNC; +#else +int xsocket_type(len_and_sockaddr **lsap, int sock_type) FAST_FUNC; +#define xsocket_type(lsap, af, sock_type) xsocket_type((lsap), (sock_type)) +#endif +int xsocket_stream(len_and_sockaddr **lsap) FAST_FUNC; /* Create server socket bound to bindaddr:port. bindaddr can be NULL, * numeric IP ("N.N.N.N") or numeric IPv6 address, * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). * Only if there is no suffix, port argument is used */ -int create_and_bind_stream_or_die(const char *bindaddr, int port); -int create_and_bind_dgram_or_die(const char *bindaddr, int port); +/* NB: these set SO_REUSEADDR before bind */ +int create_and_bind_stream_or_die(const char *bindaddr, int port) FAST_FUNC; +int create_and_bind_dgram_or_die(const char *bindaddr, int port) FAST_FUNC; /* Create client TCP socket connected to peer:port. Peer cannot be NULL. * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname, * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT"). * If there is no suffix, port argument is used */ -int create_and_connect_stream_or_die(const char *peer, int port); +int create_and_connect_stream_or_die(const char *peer, int port) FAST_FUNC; /* Connect to peer identified by lsa */ -int xconnect_stream(const len_and_sockaddr *lsa); +int xconnect_stream(const len_and_sockaddr *lsa) FAST_FUNC; +/* Get local address of bound or accepted socket */ +len_and_sockaddr *get_sock_lsa(int fd) FAST_FUNC; /* Return malloc'ed len_and_sockaddr with socket address of host:port * Currently will return IPv4 or IPv6 sockaddrs only * (depending on host), but in theory nothing prevents e.g. * UNIX socket address being returned, IPX sockaddr etc... * On error does bb_error_msg and returns NULL */ -len_and_sockaddr* host2sockaddr(const char *host, int port); +len_and_sockaddr* host2sockaddr(const char *host, int port) FAST_FUNC; /* Version which dies on error */ -len_and_sockaddr* xhost2sockaddr(const char *host, int port); -len_and_sockaddr* xdotted2sockaddr(const char *host, int port); -#if ENABLE_FEATURE_IPV6 +len_and_sockaddr* xhost2sockaddr(const char *host, int port) FAST_FUNC; +len_and_sockaddr* xdotted2sockaddr(const char *host, int port) FAST_FUNC; /* Same, useful if you want to force family (e.g. IPv6) */ -len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af); -len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af); +#if !ENABLE_FEATURE_IPV6 +#define host_and_af2sockaddr(host, port, af) host2sockaddr((host), (port)) +#define xhost_and_af2sockaddr(host, port, af) xhost2sockaddr((host), (port)) #else -/* [we evaluate af: think about "host_and_af2sockaddr(..., af++)"] */ -#define host_and_af2sockaddr(host, port, af) ((void)(af), host2sockaddr((host), (port))) -#define xhost_and_af2sockaddr(host, port, af) ((void)(af), xhost2sockaddr((host), (port))) +len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC; +len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af) FAST_FUNC; #endif -/* Assign sin[6]_port member if the socket is of corresponding type, +/* Assign sin[6]_port member if the socket is an AF_INET[6] one, * otherwise no-op. Useful for ftp. * NB: does NOT do htons() internally, just direct assignment. */ -void set_nport(len_and_sockaddr *lsa, unsigned port); +void set_nport(len_and_sockaddr *lsa, unsigned port) FAST_FUNC; /* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */ -int get_nport(const struct sockaddr *sa); +int get_nport(const struct sockaddr *sa) FAST_FUNC; /* Reverse DNS. Returns NULL on failure. */ -char* xmalloc_sockaddr2host(const struct sockaddr *sa, socklen_t salen); +char* xmalloc_sockaddr2host(const struct sockaddr *sa) FAST_FUNC; /* This one doesn't append :PORTNUM */ -char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa, socklen_t salen); +char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa) FAST_FUNC; /* This one also doesn't fall back to dotted IP (returns NULL) */ -char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa, socklen_t salen); +char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa) FAST_FUNC; /* inet_[ap]ton on steroids */ -char* xmalloc_sockaddr2dotted(const struct sockaddr *sa, socklen_t salen); -char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa, socklen_t salen); +char* xmalloc_sockaddr2dotted(const struct sockaddr *sa) FAST_FUNC; +char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa) FAST_FUNC; // "old" (ipv4 only) API // users: traceroute.c hostname.c - use _list_ of all IPs -struct hostent *xgethostbyname(const char *name); +struct hostent *xgethostbyname(const char *name) FAST_FUNC; // Also mount.c and inetd.c are using gethostbyname(), // + inet_common.c has additional IPv4-only stuff -void socket_want_pktinfo(int fd); +void socket_want_pktinfo(int fd) FAST_FUNC; ssize_t send_to_from(int fd, void *buf, size_t len, int flags, - const struct sockaddr *from, const struct sockaddr *to, - socklen_t tolen); + const struct sockaddr *to, + const struct sockaddr *from, + socklen_t tolen) FAST_FUNC; ssize_t recv_from_to(int fd, void *buf, size_t len, int flags, - struct sockaddr *from, struct sockaddr *to, - socklen_t sa_size); - - -extern char *xstrdup(const char *s); -extern char *xstrndup(const char *s, int n); -extern char *safe_strncpy(char *dst, const char *src, size_t size); -extern char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2))); + struct sockaddr *from, + struct sockaddr *to, + socklen_t sa_size) FAST_FUNC; + +char *xstrdup(const char *s) FAST_FUNC; +char *xstrndup(const char *s, int n) FAST_FUNC; +void overlapping_strcpy(char *dst, const char *src) FAST_FUNC; +char *safe_strncpy(char *dst, const char *src, size_t size) FAST_FUNC; +char *strncpy_IFNAMSIZ(char *dst, const char *src) FAST_FUNC; +/* Guaranteed to NOT be a macro (smallest code). Saves nearly 2k on uclibc. + * But potentially slow, don't use in one-billion-times loops */ +int bb_putchar(int ch) FAST_FUNC; +char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; +/* Prints unprintable chars ch as ^C or M-c to file + * (M-c is used only if ch is ORed with PRINTABLE_META), + * else it is printed as-is (except for ch = 0x9b) */ +enum { PRINTABLE_META = 0x100 }; +void fputc_printable(int ch, FILE *file) FAST_FUNC; // gcc-4.1.1 still isn't good enough at optimizing it // (+200 bytes compared to macro) //static ALWAYS_INLINE @@ -393,64 +572,116 @@ extern char *xasprintf(const char *format, ...) __attribute__ ((format (printf, /* dmalloc will redefine these to it's own implementation. It is safe * to have the prototypes here unconditionally. */ -extern void *malloc_or_warn(size_t size); -extern void *xmalloc(size_t size); -extern void *xzalloc(size_t size); -extern void *xrealloc(void *old, size_t size); - -extern ssize_t safe_read(int fd, void *buf, size_t count); -extern ssize_t full_read(int fd, void *buf, size_t count); -extern void xread(int fd, void *buf, size_t count); -extern unsigned char xread_char(int fd); -// Read one line a-la fgets. Uses one read(), works only on seekable streams -extern char *reads(int fd, char *buf, size_t count); -// Read one line a-la fgets. Reads byte-by-byte. -// Useful when it is important to not read ahead. -extern char *xmalloc_reads(int fd, char *pfx); -extern ssize_t read_close(int fd, void *buf, size_t count); -extern ssize_t open_read_close(const char *filename, void *buf, size_t count); -extern void *xmalloc_open_read_close(const char *filename, size_t *sizep); - -extern ssize_t safe_write(int fd, const void *buf, size_t count); -extern ssize_t full_write(int fd, const void *buf, size_t count); -extern void xwrite(int fd, const void *buf, size_t count); +void *malloc_or_warn(size_t size) FAST_FUNC; +void *xmalloc(size_t size) FAST_FUNC; +void *xzalloc(size_t size) FAST_FUNC; +void *xrealloc(void *old, size_t size) FAST_FUNC; +/* After xrealloc_vector(v, 4, idx) it's ok to use + * at least v[idx] and v[idx+1], for all idx values. + * shift specifies how many new elements are added (1: 2, 2: 4... 8: 256...) + * when all elements are used up. New elements are zeroed out. */ +#define xrealloc_vector(vector, shift, idx) \ + xrealloc_vector_helper((vector), (sizeof((vector)[0]) << 8) + (shift), (idx)) +void* xrealloc_vector_helper(void *vector, unsigned sizeof_and_shift, int idx) FAST_FUNC; + + +extern ssize_t safe_read(int fd, void *buf, size_t count) FAST_FUNC; +extern ssize_t nonblock_safe_read(int fd, void *buf, size_t count) FAST_FUNC; +// NB: will return short read on error, not -1, +// if some data was read before error occurred +extern ssize_t full_read(int fd, void *buf, size_t count) FAST_FUNC; +extern void xread(int fd, void *buf, size_t count) FAST_FUNC; +extern unsigned char xread_char(int fd) FAST_FUNC; +extern ssize_t read_close(int fd, void *buf, size_t maxsz) FAST_FUNC; +extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz) FAST_FUNC; +// Reads one line a-la fgets (but doesn't save terminating '\n'). +// Reads byte-by-byte. Useful when it is important to not read ahead. +// Bytes are appended to pfx (which must be malloced, or NULL). +extern char *xmalloc_reads(int fd, char *pfx, size_t *maxsz_p) FAST_FUNC; +/* Reads block up to *maxsz_p (default: INT_MAX - 4095) */ +extern void *xmalloc_read(int fd, size_t *maxsz_p) FAST_FUNC; +/* Returns NULL if file can't be opened (default max size: INT_MAX - 4095) */ +extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC; +/* Autodetects .gz etc */ +extern int open_zipped(const char *fname) FAST_FUNC; +extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC; +/* Never returns NULL */ +extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC; + +extern ssize_t safe_write(int fd, const void *buf, size_t count) FAST_FUNC; +// NB: will return short write on error, not -1, +// if some data was written before error occurred +extern ssize_t full_write(int fd, const void *buf, size_t count) FAST_FUNC; +extern void xwrite(int fd, const void *buf, size_t count) FAST_FUNC; +extern void xwrite_str(int fd, const char *str) FAST_FUNC; +extern void xopen_xwrite_close(const char* file, const char *str) FAST_FUNC; /* Reads and prints to stdout till eof, then closes FILE. Exits on error: */ -extern void xprint_and_close_file(FILE *file); -extern char *xmalloc_fgets(FILE *file); -/* Read up to (and including) TERMINATING_STRING: */ -extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string); +extern void xprint_and_close_file(FILE *file) FAST_FUNC; + +extern char *bb_get_chunk_from_file(FILE *file, int *end) FAST_FUNC; +extern char *bb_get_chunk_with_continuation(FILE *file, int *end, int *lineno) FAST_FUNC; +/* Reads up to (and including) TERMINATING_STRING: */ +extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string) FAST_FUNC; +/* Same, with limited max size, and returns the length (excluding NUL): */ +extern char *xmalloc_fgets_str_len(FILE *file, const char *terminating_string, size_t *maxsz_p) FAST_FUNC; +/* Chops off TERMINATING_STRING from the end: */ +extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string) FAST_FUNC; +/* Reads up to (and including) "\n" or NUL byte: */ +extern char *xmalloc_fgets(FILE *file) FAST_FUNC; /* Chops off '\n' from the end, unlike fgets: */ -extern char *xmalloc_getline(FILE *file); -extern char *bb_get_chunk_from_file(FILE *file, int *end); -extern void die_if_ferror(FILE *file, const char *msg); -extern void die_if_ferror_stdout(void); -extern void xfflush_stdout(void); -extern void fflush_stdout_and_exit(int retval) ATTRIBUTE_NORETURN; -extern int fclose_if_not_stdin(FILE *file); -extern FILE *xfopen(const char *filename, const char *mode); +extern char *xmalloc_fgetline(FILE *file) FAST_FUNC; +/* Same, but doesn't try to conserve space (may have some slack after the end) */ +/* extern char *xmalloc_fgetline_fast(FILE *file) FAST_FUNC; */ + +extern void die_if_ferror(FILE *file, const char *msg) FAST_FUNC; +extern void die_if_ferror_stdout(void) FAST_FUNC; +extern void xfflush_stdout(void) FAST_FUNC; +extern void fflush_stdout_and_exit(int retval) NORETURN FAST_FUNC; +extern int fclose_if_not_stdin(FILE *file) FAST_FUNC; +extern FILE *xfopen(const char *filename, const char *mode) FAST_FUNC; /* Prints warning to stderr and returns NULL on failure: */ -extern FILE *fopen_or_warn(const char *filename, const char *mode); +extern FILE *fopen_or_warn(const char *filename, const char *mode) FAST_FUNC; /* "Opens" stdin if filename is special, else just opens file: */ -extern FILE *fopen_or_warn_stdin(const char *filename); +extern FILE *xfopen_stdin(const char *filename) FAST_FUNC; +extern FILE *fopen_or_warn_stdin(const char *filename) FAST_FUNC; +extern FILE* fopen_for_read(const char *path) FAST_FUNC; +extern FILE* xfopen_for_read(const char *path) FAST_FUNC; +extern FILE* fopen_for_write(const char *path) FAST_FUNC; +extern FILE* xfopen_for_write(const char *path) FAST_FUNC; + +int bb_pstrcmp(const void *a, const void *b) /* not FAST_FUNC! */; +void qsort_string_vector(char **sv, unsigned count) FAST_FUNC; + +/* Wrapper which restarts poll on EINTR or ENOMEM. + * On other errors complains [perror("poll")] and returns. + * Warning! May take (much) longer than timeout_ms to return! + * If this is a problem, use bare poll and open-code EINTR/ENOMEM handling */ +int safe_poll(struct pollfd *ufds, nfds_t nfds, int timeout_ms) FAST_FUNC; + +char *safe_gethostname(void) FAST_FUNC; +char *safe_getdomainname(void) FAST_FUNC; /* Convert each alpha char in str to lower-case */ -extern char* str_tolower(char *str); +char* str_tolower(char *str) FAST_FUNC; -char *utoa(unsigned n); -char *itoa(int n); +char *utoa(unsigned n) FAST_FUNC; +char *itoa(int n) FAST_FUNC; /* Returns a pointer past the formatted number, does NOT null-terminate */ -char *utoa_to_buf(unsigned n, char *buf, unsigned buflen); -char *itoa_to_buf(int n, char *buf, unsigned buflen); -void smart_ulltoa5(unsigned long long ul, char buf[5]); +char *utoa_to_buf(unsigned n, char *buf, unsigned buflen) FAST_FUNC; +char *itoa_to_buf(int n, char *buf, unsigned buflen) FAST_FUNC; +/* Intelligent formatters of bignums */ +void smart_ulltoa4(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC; +void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale) FAST_FUNC; //TODO: provide pointer to buf (avoid statics)? const char *make_human_readable_str(unsigned long long size, - unsigned long block_size, unsigned long display_unit); + unsigned long block_size, unsigned long display_unit) FAST_FUNC; /* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */ -char *bin2hex(char *buf, const char *cp, int count); +char *bin2hex(char *buf, const char *cp, int count) FAST_FUNC; +/* Last element is marked by mult == 0 */ struct suffix_mult { - const char *suffix; + char suffix[4]; unsigned mult; }; #include "xatonum.h" @@ -459,49 +690,63 @@ struct suffix_mult { * in many places people want *non-negative* values, but store them * in signed int. Therefore we need this one: * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc */ -int xatoi_u(const char *numstr); +int xatoi_u(const char *numstr) FAST_FUNC; /* Useful for reading port numbers */ -uint16_t xatou16(const char *numstr); +uint16_t xatou16(const char *numstr) FAST_FUNC; /* These parse entries in /etc/passwd and /etc/group. This is desirable * for BusyBox since we want to avoid using the glibc NSS stuff, which * increases target size and is often not needed on embedded systems. */ -long xuname2uid(const char *name); -long xgroup2gid(const char *name); +long xuname2uid(const char *name) FAST_FUNC; +long xgroup2gid(const char *name) FAST_FUNC; /* wrapper: allows string to contain numeric uid or gid */ -unsigned long get_ug_id(const char *s, long (*xname2id)(const char *)); +unsigned long get_ug_id(const char *s, long FAST_FUNC (*xname2id)(const char *)) FAST_FUNC; /* from chpst. Does not die, returns 0 on failure */ struct bb_uidgid_t { uid_t uid; gid_t gid; }; /* always sets uid and gid */ -int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok); +int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok) FAST_FUNC; +/* always sets uid and gid, allows numeric; exits on failure */ +void xget_uidgid(struct bb_uidgid_t*, const char*) FAST_FUNC; /* chown-like handling of "user[:[group]" */ -void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group); -/* what is this? */ -/*extern char *bb_getug(char *buffer, char *idname, long id, int bufsize, char prefix);*/ -char *bb_getpwuid(char *name, long uid, int bufsize); -char *bb_getgrgid(char *group, long gid, int bufsize); +void parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group) FAST_FUNC; +struct passwd* xgetpwnam(const char *name) FAST_FUNC; +struct group* xgetgrnam(const char *name) FAST_FUNC; +struct passwd* xgetpwuid(uid_t uid) FAST_FUNC; +struct group* xgetgrgid(gid_t gid) FAST_FUNC; +char* xuid2uname(uid_t uid) FAST_FUNC; +char* xgid2group(gid_t gid) FAST_FUNC; +char* uid2uname(uid_t uid) FAST_FUNC; +char* gid2group(gid_t gid) FAST_FUNC; +char* uid2uname_utoa(long uid) FAST_FUNC; +char* gid2group_utoa(long gid) FAST_FUNC; /* versions which cache results (useful for ps, ls etc) */ -const char* get_cached_username(uid_t uid); -const char* get_cached_groupname(gid_t gid); -void clear_username_cache(void); +const char* get_cached_username(uid_t uid) FAST_FUNC; +const char* get_cached_groupname(gid_t gid) FAST_FUNC; +void clear_username_cache(void) FAST_FUNC; /* internally usernames are saved in fixed-sized char[] buffers */ enum { USERNAME_MAX_SIZE = 16 - sizeof(int) }; +#if ENABLE_FEATURE_CHECK_NAMES +void die_if_bad_username(const char* name) FAST_FUNC; +#else +#define die_if_bad_username(name) ((void)(name)) +#endif +int execable_file(const char *name) FAST_FUNC; +char *find_execable(const char *filename, char **PATHp) FAST_FUNC; +int exists_execable(const char *filename) FAST_FUNC; -struct bb_applet; -int execable_file(const char *name); -char *find_execable(const char *filename); -int exists_execable(const char *filename); - +/* BB_EXECxx always execs (it's not doing NOFORK/NOEXEC stuff), + * but it may exec busybox and call applet instead of searching PATH. + */ #if ENABLE_FEATURE_PREFER_APPLETS -int bb_execvp(const char *file, char *const argv[]); +int bb_execvp(const char *file, char *const argv[]) FAST_FUNC; #define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd) #define BB_EXECLP(prog,cmd,...) \ - execlp((find_applet_by_name(prog)) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \ + execlp((find_applet_by_name(prog) >= 0) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \ cmd, __VA_ARGS__) #else #define BB_EXECVP(prog,cmd) execvp(prog,cmd) @@ -509,38 +754,38 @@ int bb_execvp(const char *file, char *const argv[]); #endif /* NOMMU friendy fork+exec */ -pid_t spawn(char **argv); -pid_t xspawn(char **argv); +pid_t spawn(char **argv) FAST_FUNC; +pid_t xspawn(char **argv) FAST_FUNC; -/* Unlike waitpid, waits ONLY for one process, +pid_t safe_waitpid(pid_t pid, int *wstat, int options) FAST_FUNC; +/* Unlike waitpid, waits ONLY for one process. * It's safe to pass negative 'pids' from failed [v]fork - * wait4pid will return -1 (and will not clobber [v]fork's errno). * IOW: rc = wait4pid(spawn(argv)); * if (rc < 0) bb_perror_msg("%s", argv[0]); * if (rc > 0) bb_error_msg("exit code: %d", rc); */ -int wait4pid(int pid); -int wait_pid(int *wstat, int pid); -int wait_nohang(int *wstat); +int wait4pid(pid_t pid) FAST_FUNC; +pid_t wait_any_nohang(int *wstat) FAST_FUNC; #define wait_crashed(w) ((w) & 127) #define wait_exitcode(w) ((w) >> 8) #define wait_stopsig(w) ((w) >> 8) #define wait_stopped(w) (((w) & 127) == 127) /* wait4pid(spawn(argv)) + NOFORK/NOEXEC (if configured) */ -int spawn_and_wait(char **argv); +pid_t spawn_and_wait(char **argv) FAST_FUNC; struct nofork_save_area { jmp_buf die_jmp; - const struct bb_applet *current_applet; + const char *applet_name; int xfunc_error_retval; uint32_t option_mask32; int die_sleep; smallint saved; }; -void save_nofork_data(struct nofork_save_area *save); -void restore_nofork_data(struct nofork_save_area *save); +void save_nofork_data(struct nofork_save_area *save) FAST_FUNC; +void restore_nofork_data(struct nofork_save_area *save) FAST_FUNC; /* Does NOT check that applet is NOFORK, just blindly runs it */ -int run_nofork_applet(const struct bb_applet *a, char **argv); -int run_nofork_applet_prime(struct nofork_save_area *old, const struct bb_applet *a, char **argv); +int run_nofork_applet(int applet_no, char **argv) FAST_FUNC; +int run_nofork_applet_prime(struct nofork_save_area *old, int applet_no, char **argv) FAST_FUNC; /* Helpers for daemonization. * @@ -556,9 +801,9 @@ int run_nofork_applet_prime(struct nofork_save_area *old, const struct bb_applet * Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty * (will do setsid()). * - * forkexit_or_rexec(argv) = bare-bones "fork + parent exits" on MMU, + * fork_or_rexec(argv) = bare-bones "fork" on MMU, * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid(). - * Currently used for openvt. On MMU ignores argv. + * On MMU ignores argv. * * Helper for network daemons in foreground mode: * @@ -567,64 +812,76 @@ int run_nofork_applet_prime(struct nofork_save_area *old, const struct bb_applet */ enum { DAEMON_CHDIR_ROOT = 1, - DAEMON_DEVNULL_STDIO = /* 2 */ 0, /* no users so far */ + DAEMON_DEVNULL_STDIO = 2, DAEMON_CLOSE_EXTRA_FDS = 4, DAEMON_ONLY_SANITIZE = 8, /* internal use */ }; #if BB_MMU - void forkexit_or_rexec(void); -# define forkexit_or_rexec(argv) forkexit_or_rexec() + pid_t fork_or_rexec(void) FAST_FUNC; + enum { re_execed = 0 }; +# define fork_or_rexec(argv) fork_or_rexec() # define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags) # define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus) #else - void forkexit_or_rexec(char **argv); + void re_exec(char **argv) NORETURN FAST_FUNC; + pid_t fork_or_rexec(char **argv) FAST_FUNC; extern bool re_execed; + int BUG_fork_is_unavailable_on_nommu(void) FAST_FUNC; + int BUG_daemon_is_unavailable_on_nommu(void) FAST_FUNC; + void BUG_bb_daemonize_is_unavailable_on_nommu(void) FAST_FUNC; # define fork() BUG_fork_is_unavailable_on_nommu() # define daemon(a,b) BUG_daemon_is_unavailable_on_nommu() # define bb_daemonize(a) BUG_bb_daemonize_is_unavailable_on_nommu() #endif -void bb_daemonize_or_rexec(int flags, char **argv); -void bb_sanitize_stdio(void); +void bb_daemonize_or_rexec(int flags, char **argv) FAST_FUNC; +void bb_sanitize_stdio(void) FAST_FUNC; +/* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */ +int sanitize_env_if_suid(void) FAST_FUNC; -// TODO: always error out? -enum { BB_GETOPT_ERROR = 0x80000000 }; +extern const char *const bb_argv_dash[]; /* "-", NULL */ extern const char *opt_complementary; #if ENABLE_GETOPT_LONG -extern const struct option *applet_long_options; +#define No_argument "\0" +#define Required_argument "\001" +#define Optional_argument "\002" +extern const char *applet_long_options; #endif extern uint32_t option_mask32; -extern uint32_t getopt32(int argc, char **argv, const char *applet_opts, ...); +extern uint32_t getopt32(char **argv, const char *applet_opts, ...) FAST_FUNC; typedef struct llist_t { char *data; struct llist_t *link; } llist_t; -void llist_add_to(llist_t **old_head, void *data); -void llist_add_to_end(llist_t **list_head, void *data); -void *llist_pop(llist_t **elm); -void llist_unlink(llist_t **head, llist_t *elm); -void llist_free(llist_t *elm, void (*freeit)(void *data)); -llist_t *llist_rev(llist_t *list); +void llist_add_to(llist_t **old_head, void *data) FAST_FUNC; +void llist_add_to_end(llist_t **list_head, void *data) FAST_FUNC; +void *llist_pop(llist_t **elm) FAST_FUNC; +void llist_unlink(llist_t **head, llist_t *elm) FAST_FUNC; +void llist_free(llist_t *elm, void (*freeit)(void *data)) FAST_FUNC; +llist_t *llist_rev(llist_t *list) FAST_FUNC; /* BTW, surprisingly, changing API to * llist_t *llist_add_to(llist_t *old_head, void *data) * etc does not result in smaller code... */ - -#if ENABLE_FEATURE_PIDFILE -int write_pidfile(const char *path); -#define remove_pidfile(f) ((void)unlink(f)) +/* start_stop_daemon and udhcpc are special - they want + * to create pidfiles regardless of FEATURE_PIDFILE */ +#if ENABLE_FEATURE_PIDFILE || defined(WANT_PIDFILE) +/* True only if we created pidfile which is *file*, not /dev/null etc */ +extern smallint wrote_pidfile; +void write_pidfile(const char *path) FAST_FUNC; +#define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0) #else -/* Why? #defining it to 1 gives "warning: statement with no effect"... */ -static ALWAYS_INLINE int write_pidfile(const char *path) { return 1; } -#define remove_pidfile(f) ((void)0) +enum { wrote_pidfile = 0 }; +#define write_pidfile(path) ((void)0) +#define remove_pidfile(path) ((void)0) #endif enum { LOGMODE_NONE = 0, - LOGMODE_STDIO = 1<<0, - LOGMODE_SYSLOG = 1<<1, + LOGMODE_STDIO = (1 << 0), + LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG, LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO, }; extern const char *msg_eol; @@ -632,45 +889,89 @@ extern smallint logmode; extern int die_sleep; extern int xfunc_error_retval; extern jmp_buf die_jmp; -extern void xfunc_die(void) ATTRIBUTE_NORETURN; -extern void bb_show_usage(void) ATTRIBUTE_NORETURN ATTRIBUTE_EXTERNALLY_VISIBLE; -extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); -extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))); -extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); -extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))); -extern void bb_vherror_msg(const char *s, va_list p); -extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); -extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))); -extern void bb_perror_nomsg_and_die(void) ATTRIBUTE_NORETURN; -extern void bb_perror_nomsg(void); -extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))); -/* These are used internally -- you shouldn't need to use them */ -extern void bb_verror_msg(const char *s, va_list p, const char *strerr); -extern void bb_vperror_msg(const char *s, va_list p); -extern void bb_vinfo_msg(const char *s, va_list p); - - -/* applets which are useful from another applets */ +extern void xfunc_die(void) NORETURN FAST_FUNC; +extern void bb_show_usage(void) NORETURN FAST_FUNC; +extern void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; +extern void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; +extern void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; +extern void bb_simple_perror_msg(const char *s) FAST_FUNC; +extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; +extern void bb_simple_perror_msg_and_die(const char *s) NORETURN FAST_FUNC; +extern void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; +extern void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC; +extern void bb_perror_nomsg_and_die(void) NORETURN FAST_FUNC; +extern void bb_perror_nomsg(void) FAST_FUNC; +extern void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; +extern void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC; + +/* We need to export XXX_main from libbusybox + * only if we build "individual" binaries + */ +#if ENABLE_FEATURE_INDIVIDUAL +#define MAIN_EXTERNALLY_VISIBLE EXTERNALLY_VISIBLE +#else +#define MAIN_EXTERNALLY_VISIBLE +#endif + + +/* Applets which are useful from another applets */ int bb_cat(char** argv); -int bb_echo(char** argv); -int test_main(int argc, char** argv); -int kill_main(int argc, char **argv); +/* If shell needs them, they exist even if not enabled as applets */ +int echo_main(int argc, char** argv) USE_ECHO(MAIN_EXTERNALLY_VISIBLE); +int printf_main(int argc, char **argv) USE_PRINTF(MAIN_EXTERNALLY_VISIBLE); +int test_main(int argc, char **argv) USE_TEST(MAIN_EXTERNALLY_VISIBLE); +int kill_main(int argc, char **argv) USE_KILL(MAIN_EXTERNALLY_VISIBLE); +/* Similar, but used by chgrp, not shell */ +int chown_main(int argc, char **argv) USE_CHOWN(MAIN_EXTERNALLY_VISIBLE); +/* Used by ftpd */ +int ls_main(int argc, char **argv) USE_LS(MAIN_EXTERNALLY_VISIBLE); +/* Don't need USE_xxx() guard for these */ +int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; + #if ENABLE_ROUTE -void bb_displayroutes(int noresolve, int netstatfmt); +void bb_displayroutes(int noresolve, int netstatfmt) FAST_FUNC; #endif -int chown_main(int argc, char **argv); -#if ENABLE_GUNZIP -int gunzip_main(int argc, char **argv); + + +/* "Keycodes" that report an escape sequence. + * We use something which fits into signed char, + * yet doesn't represent any valid Unicode characher. + * Also, -1 is reserved for error indication and we don't use it. */ +enum { + KEYCODE_UP = -2, + KEYCODE_DOWN = -3, + KEYCODE_RIGHT = -4, + KEYCODE_LEFT = -5, + KEYCODE_HOME = -6, + KEYCODE_END = -7, + KEYCODE_INSERT = -8, + KEYCODE_DELETE = -9, + KEYCODE_PAGEUP = -10, + KEYCODE_PAGEDOWN = -11, +#if 0 + KEYCODE_FUN1 = -12, + KEYCODE_FUN2 = -13, + KEYCODE_FUN3 = -14, + KEYCODE_FUN4 = -15, + KEYCODE_FUN5 = -16, + KEYCODE_FUN6 = -17, + KEYCODE_FUN7 = -18, + KEYCODE_FUN8 = -19, + KEYCODE_FUN9 = -20, + KEYCODE_FUN10 = -21, + KEYCODE_FUN11 = -22, + KEYCODE_FUN12 = -23, #endif -int bbunpack(char **argv, - char* (*make_new_name)(char *filename), - USE_DESKTOP(long long) int (*unpacker)(void) -); + /* How long the longest ESC sequence we know? */ + KEYCODE_BUFFER_SIZE = 4 +}; +int read_key(int fd, smalluint *nbuffered, char *buffer) FAST_FUNC; /* Networking */ -int create_icmp_socket(void); -int create_icmp6_socket(void); +int create_icmp_socket(void) FAST_FUNC; +int create_icmp6_socket(void) FAST_FUNC; /* interface.c */ /* This structure defines protocol families and their handlers. */ struct aftype { @@ -678,15 +979,14 @@ struct aftype { const char *title; int af; int alen; - char *(*print) (unsigned char *); - const char *(*sprint) (struct sockaddr *, int numeric); - int (*input) (/*int type,*/ const char *bufp, struct sockaddr *); - void (*herror) (char *text); - int (*rprint) (int options); - int (*rinput) (int typ, int ext, char **argv); - + char* FAST_FUNC (*print)(unsigned char *); + const char* FAST_FUNC (*sprint)(struct sockaddr *, int numeric); + int FAST_FUNC (*input)(/*int type,*/ const char *bufp, struct sockaddr *); + void FAST_FUNC (*herror)(char *text); + int FAST_FUNC (*rprint)(int options); + int FAST_FUNC (*rinput)(int typ, int ext, char **argv); /* may modify src */ - int (*getmask) (char *src, struct sockaddr * mask, char *name); + int FAST_FUNC (*getmask)(char *src, struct sockaddr *mask, char *name); }; /* This structure defines hardware protocols and their handlers. */ struct hwtype { @@ -694,96 +994,195 @@ struct hwtype { const char *title; int type; int alen; - char *(*print) (unsigned char *); - int (*input) (const char *, struct sockaddr *); - int (*activate) (int fd); + char* FAST_FUNC (*print)(unsigned char *); + int FAST_FUNC (*input)(const char *, struct sockaddr *); + int FAST_FUNC (*activate)(int fd); int suppress_null_addr; }; extern smallint interface_opt_a; -int display_interfaces(char *ifname); -const struct aftype *get_aftype(const char *name); -const struct hwtype *get_hwtype(const char *name); -const struct hwtype *get_hwntype(int type); +int display_interfaces(char *ifname) FAST_FUNC; +#if ENABLE_FEATURE_HWIB +int in_ib(const char *bufp, struct sockaddr *sap) FAST_FUNC; +#else +#define in_ib(a, b) 1 /* fail */ +#endif +const struct aftype *get_aftype(const char *name) FAST_FUNC; +const struct hwtype *get_hwtype(const char *name) FAST_FUNC; +const struct hwtype *get_hwntype(int type) FAST_FUNC; #ifndef BUILD_INDIVIDUAL -extern const struct bb_applet *find_applet_by_name(const char *name); +extern int find_applet_by_name(const char *name) FAST_FUNC; /* Returns only if applet is not found. */ -extern void run_applet_and_exit(const char *name, char **argv); -extern void run_current_applet_and_exit(char **argv) ATTRIBUTE_NORETURN; +extern void run_applet_and_exit(const char *name, char **argv) FAST_FUNC; +extern void run_applet_no_and_exit(int a, char **argv) NORETURN FAST_FUNC; #endif -extern int match_fstype(const struct mntent *mt, const char *fstypes); -extern struct mntent *find_mount_point(const char *name, const char *table); -extern void erase_mtab(const char * name); -extern unsigned int tty_baud_to_value(speed_t speed); -extern speed_t tty_value_to_baud(unsigned int value); -extern void bb_warn_ignoring_args(int n); - -extern int get_linux_version_code(void); - -extern char *query_loop(const char *device); -extern int del_loop(const char *device); -extern int set_loop(char **device, const char *file, unsigned long long offset); - - +#ifdef HAVE_MNTENT_H +extern int match_fstype(const struct mntent *mt, const char *fstypes) FAST_FUNC; +extern struct mntent *find_mount_point(const char *name, const char *table) FAST_FUNC; +#endif +extern void erase_mtab(const char * name) FAST_FUNC; +extern unsigned int tty_baud_to_value(speed_t speed) FAST_FUNC; +extern speed_t tty_value_to_baud(unsigned int value) FAST_FUNC; +extern void bb_warn_ignoring_args(int n) FAST_FUNC; + +extern int get_linux_version_code(void) FAST_FUNC; + +extern char *query_loop(const char *device) FAST_FUNC; +extern int del_loop(const char *device) FAST_FUNC; +/* If *devname is not NULL, use that name, otherwise try to find free one, + * malloc and return it in *devname. + * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */ +extern int set_loop(char **devname, const char *file, unsigned long long offset) FAST_FUNC; + +/* Like bb_ask below, but asks on stdin with no timeout. */ +char *bb_ask_stdin(const char * prompt) FAST_FUNC; //TODO: pass buf pointer or return allocated buf (avoid statics)? -char *bb_askpass(int timeout, const char * prompt); -int bb_ask_confirmation(void); -int klogctl(int type, char * b, int len); +char *bb_ask(const int fd, int timeout, const char * prompt) FAST_FUNC; +int bb_ask_confirmation(void) FAST_FUNC; -extern int bb_parse_mode(const char* s, mode_t* theMode); +int bb_parse_mode(const char* s, mode_t* theMode) FAST_FUNC; -char *concat_path_file(const char *path, const char *filename); -char *concat_subpath_file(const char *path, const char *filename); +/* + * Config file parser + */ +enum { + PARSE_COLLAPSE = 0x00010000, // treat consecutive delimiters as one + PARSE_TRIM = 0x00020000, // trim leading and trailing delimiters +// TODO: COLLAPSE and TRIM seem to always go in pair + PARSE_GREEDY = 0x00040000, // last token takes entire remainder of the line + PARSE_MIN_DIE = 0x00100000, // die if < min tokens found + // keep a copy of current line + PARSE_KEEP_COPY = 0x00200000 * ENABLE_FEATURE_CROND_D, +// PARSE_ESCAPE = 0x00400000, // process escape sequences in tokens + // NORMAL is: + // * remove leading and trailing delimiters and collapse + // multiple delimiters into one + // * warn and continue if less than mintokens delimiters found + // * grab everything into last token + PARSE_NORMAL = PARSE_COLLAPSE | PARSE_TRIM | PARSE_GREEDY, +}; +typedef struct parser_t { + FILE *fp; + char *line; + char *data; + int lineno; +} parser_t; +parser_t* config_open(const char *filename) FAST_FUNC; +parser_t* config_open2(const char *filename, FILE* FAST_FUNC (*fopen_func)(const char *path)) FAST_FUNC; +int config_read(parser_t *parser, char **tokens, unsigned flags, const char *delims) FAST_FUNC; +#define config_read(parser, tokens, max, min, str, flags) \ + config_read(parser, tokens, ((flags) | (((min) & 0xFF) << 8) | ((max) & 0xFF)), str) +void config_close(parser_t *parser) FAST_FUNC; + +/* Concatenate path and filename to new allocated buffer. + * Add "/" only as needed (no duplicate "//" are produced). + * If path is NULL, it is assumed to be "/". + * filename should not be NULL. */ +char *concat_path_file(const char *path, const char *filename) FAST_FUNC; +char *concat_subpath_file(const char *path, const char *filename) FAST_FUNC; +const char *bb_basename(const char *name) FAST_FUNC; /* NB: can violate const-ness (similarly to strchr) */ -char *last_char_is(const char *s, int c); - - -USE_DESKTOP(long long) int uncompress(int fd_in, int fd_out); -int inflate(int in, int out); +char *last_char_is(const char *s, int c) FAST_FUNC; -int bb_make_directory(char *path, long mode, int flags); +int bb_make_directory(char *path, long mode, int flags) FAST_FUNC; -int get_signum(const char *name); -const char *get_signame(int number); +int get_signum(const char *name) FAST_FUNC; +const char *get_signame(int number) FAST_FUNC; +void print_signames(void) FAST_FUNC; -char *bb_simplify_path(const char *path); +char *bb_simplify_path(const char *path) FAST_FUNC; #define FAIL_DELAY 3 -extern void bb_do_delay(int seconds); -extern void change_identity(const struct passwd *pw); -extern const char *change_identity_e2str(const struct passwd *pw); -extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args); +extern void bb_do_delay(int seconds) FAST_FUNC; +extern void change_identity(const struct passwd *pw) FAST_FUNC; +extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) NORETURN FAST_FUNC; +extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) FAST_FUNC; #if ENABLE_SELINUX -extern void renew_current_security_context(void); -extern void set_current_security_context(security_context_t sid); +extern void renew_current_security_context(void) FAST_FUNC; +extern void set_current_security_context(security_context_t sid) FAST_FUNC; extern context_t set_security_context_component(security_context_t cur_context, - char *user, char *role, char *type, char *range); -extern void setfscreatecon_or_die(security_context_t scontext); + char *user, char *role, char *type, char *range) FAST_FUNC; +extern void setfscreatecon_or_die(security_context_t scontext) FAST_FUNC; +extern void selinux_preserve_fcontext(int fdesc) FAST_FUNC; +#else +#define selinux_preserve_fcontext(fdesc) ((void)0) +#endif +extern void selinux_or_die(void) FAST_FUNC; +extern int restricted_shell(const char *shell) FAST_FUNC; + +/* setup_environment: + * if clear_env = 1: cd(pw->pw_dir), clear environment, then set + * TERM=(old value) + * USER=pw->pw_name, LOGNAME=pw->pw_name + * PATH=bb_default_[root_]path + * HOME=pw->pw_dir + * SHELL=shell + * else if change_env = 1: + * if not root (if pw->pw_uid != 0): + * USER=pw->pw_name, LOGNAME=pw->pw_name + * HOME=pw->pw_dir + * SHELL=shell + * else does nothing + */ +extern void setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw) FAST_FUNC; +extern int correct_password(const struct passwd *pw) FAST_FUNC; +/* Returns a malloced string */ +#if !ENABLE_USE_BB_CRYPT +#define pw_encrypt(clear, salt, cleanup) pw_encrypt(clear, salt) +#endif +extern char *pw_encrypt(const char *clear, const char *salt, int cleanup) FAST_FUNC; +extern int obscure(const char *old, const char *newval, const struct passwd *pwdp) FAST_FUNC; +/* rnd is additional random input. New one is returned. + * Useful if you call crypt_make_salt many times in a row: + * rnd = crypt_make_salt(buf1, 4, 0); + * rnd = crypt_make_salt(buf2, 4, rnd); + * rnd = crypt_make_salt(buf3, 4, rnd); + * (otherwise we risk having same salt generated) + */ +extern int crypt_make_salt(char *p, int cnt, int rnd) FAST_FUNC; +/* Returns number of lines changed, or -1 on error */ +extern int update_passwd(const char *filename, const char *username, + const char *new_pw) FAST_FUNC; + +int index_in_str_array(const char *const string_array[], const char *key) FAST_FUNC; +int index_in_strings(const char *strings, const char *key) FAST_FUNC; +int index_in_substr_array(const char *const string_array[], const char *key) FAST_FUNC; +int index_in_substrings(const char *strings, const char *key) FAST_FUNC; +const char *nth_string(const char *strings, int n) FAST_FUNC; + +extern void print_login_issue(const char *issue_file, const char *tty) FAST_FUNC; +extern void print_login_prompt(void) FAST_FUNC; + +char *xmalloc_ttyname(int fd) FAST_FUNC; +/* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */ +int get_terminal_width_height(int fd, unsigned *width, unsigned *height) FAST_FUNC; + +int tcsetattr_stdin_TCSANOW(const struct termios *tp) FAST_FUNC; + +/* NB: "unsigned request" is crucial! "int request" will break some arches! */ +int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; +int ioctl_or_perror_and_die(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC; +#if ENABLE_IOCTL_HEX2STR_ERROR +int bb_ioctl_or_warn(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; +int bb_xioctl(int fd, unsigned request, void *argp, const char *ioctl_name) FAST_FUNC; +#define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp,#request) +#define xioctl(fd,request,argp) bb_xioctl(fd,request,argp,#request) +#else +int bb_ioctl_or_warn(int fd, unsigned request, void *argp) FAST_FUNC; +int bb_xioctl(int fd, unsigned request, void *argp) FAST_FUNC; +#define ioctl_or_warn(fd,request,argp) bb_ioctl_or_warn(fd,request,argp) +#define xioctl(fd,request,argp) bb_xioctl(fd,request,argp) #endif -extern void selinux_or_die(void); -extern int restricted_shell(const char *shell); -extern void setup_environment(const char *shell, int loginshell, int changeenv, const struct passwd *pw); -extern int correct_password(const struct passwd *pw); -extern char *pw_encrypt(const char *clear, const char *salt); -extern int obscure(const char *old, const char *newval, const struct passwd *pwdp); -extern int index_in_str_array(const char * const string_array[], const char *key); -extern int index_in_substr_array(const char * const string_array[], const char *key); -extern void print_login_issue(const char *issue_file, const char *tty); -extern void print_login_prompt(void); - -extern void crypt_make_salt(char *p, int cnt); - -int get_terminal_width_height(const int fd, int *width, int *height); - -char *is_in_ino_dev_hashtable(const struct stat *statbuf); -void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name); -void reset_ino_dev_hashtable(void); + +char *is_in_ino_dev_hashtable(const struct stat *statbuf) FAST_FUNC; +void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name) FAST_FUNC; +void reset_ino_dev_hashtable(void) FAST_FUNC; #ifdef __GLIBC__ /* At least glibc has horrendously large inline for this, so wrap it */ -unsigned long long bb_makedev(unsigned int major, unsigned int minor); +unsigned long long bb_makedev(unsigned int major, unsigned int minor) FAST_FUNC; #undef makedev #define makedev(a,b) bb_makedev(a,b) #endif @@ -792,9 +1191,9 @@ unsigned long long bb_makedev(unsigned int major, unsigned int minor); #if ENABLE_FEATURE_EDITING /* It's NOT just ENABLEd or disabled. It's a number: */ #ifdef CONFIG_FEATURE_EDITING_HISTORY -#define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0) +# define MAX_HISTORY (CONFIG_FEATURE_EDITING_HISTORY + 0) #else -#define MAX_HISTORY 0 +# define MAX_HISTORY 0 #endif typedef struct line_input_t { int flags; @@ -802,7 +1201,10 @@ typedef struct line_input_t { #if MAX_HISTORY int cnt_history; int cur_history; - USE_FEATURE_EDITING_SAVEHISTORY(const char *hist_file;) +#if ENABLE_FEATURE_EDITING_SAVEHISTORY + unsigned cnt_history_in_file; + const char *hist_file; +#endif char *history[MAX_HISTORY + 1]; #endif } line_input_t; @@ -815,10 +1217,16 @@ enum { WITH_PATH_LOOKUP = 0x20, FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION, }; -line_input_t *new_line_input_t(int flags); -int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state); +line_input_t *new_line_input_t(int flags) FAST_FUNC; +/* so far static: void free_line_input_t(line_input_t *n) FAST_FUNC; */ +/* Returns: + * -1 on read errors or EOF, or on bare Ctrl-D, + * 0 on ctrl-C (the line entered is still returned in 'command'), + * >0 length of input string, including terminating '\n' + */ +int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *state) FAST_FUNC; #else -int read_line_input(const char* prompt, char* command, int maxsize); +int read_line_input(const char* prompt, char* command, int maxsize) FAST_FUNC; #define read_line_input(prompt, command, maxsize, state) \ read_line_input(prompt, command, maxsize) #endif @@ -832,15 +1240,19 @@ enum { COMM_LEN = TASK_COMM_LEN }; enum { COMM_LEN = 16 }; #endif #endif -typedef struct { +typedef struct procps_status_t { DIR *dir; + uint8_t shift_pages_to_bytes; + uint8_t shift_pages_to_kb; /* Fields are set to 0/NULL if failed to determine (or not requested) */ - char *cmd; + uint16_t argv_len; + char *argv0; USE_SELINUX(char *context;) /* Everything below must contain no ptrs to malloc'ed data: * it is memset(0) for each process in procps_scan() */ - unsigned vsz, rss; /* we round it to kbytes */ + unsigned long vsz, rss; /* we round it to kbytes */ unsigned long stime, utime; + unsigned long start_time; unsigned pid; unsigned ppid; unsigned pgid; @@ -848,10 +1260,24 @@ typedef struct { unsigned uid; unsigned gid; unsigned tty_major,tty_minor; +#if ENABLE_FEATURE_TOPMEM + unsigned long mapped_rw; + unsigned long mapped_ro; + unsigned long shared_clean; + unsigned long shared_dirty; + unsigned long private_clean; + unsigned long private_dirty; + unsigned long stack; +#endif char state[4]; - /* basename of executable in exec(2), read from /proc/N/stat */ + /* basename of executable in exec(2), read from /proc/N/stat + * (if executable is symlink or script, it is NOT replaced + * by link target or interpreter name) */ char comm[COMM_LEN]; /* user/group? - use passwd/group parsing functions */ +#if ENABLE_FEATURE_TOP_SMP_PROCESS + int last_seen_on_cpu; +#endif } procps_status_t; enum { PSSCAN_PID = 1 << 0, @@ -860,41 +1286,72 @@ enum { PSSCAN_SID = 1 << 3, PSSCAN_UIDGID = 1 << 4, PSSCAN_COMM = 1 << 5, - PSSCAN_CMD = 1 << 6, - PSSCAN_STATE = 1 << 7, - PSSCAN_VSZ = 1 << 8, - PSSCAN_RSS = 1 << 9, - PSSCAN_STIME = 1 << 10, - PSSCAN_UTIME = 1 << 11, - PSSCAN_TTY = 1 << 12, - USE_SELINUX(PSSCAN_CONTEXT = 1 << 13,) + /* PSSCAN_CMD = 1 << 6, - use read_cmdline instead */ + PSSCAN_ARGV0 = 1 << 7, + /* PSSCAN_EXE = 1 << 8, - not implemented */ + PSSCAN_STATE = 1 << 9, + PSSCAN_VSZ = 1 << 10, + PSSCAN_RSS = 1 << 11, + PSSCAN_STIME = 1 << 12, + PSSCAN_UTIME = 1 << 13, + PSSCAN_TTY = 1 << 14, + PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM, + /* NB: used by find_pid_by_name(). Any applet using it + * needs to be mentioned here. */ + PSSCAN_ARGVN = (1 << 16) * (ENABLE_KILLALL + || ENABLE_PGREP || ENABLE_PKILL + || ENABLE_PIDOF + || ENABLE_SESTATUS + ), + USE_SELINUX(PSSCAN_CONTEXT = 1 << 17,) + PSSCAN_START_TIME = 1 << 18, + PSSCAN_CPU = 1 << 19, /* These are all retrieved from proc/NN/stat in one go: */ PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID - | PSSCAN_COMM | PSSCAN_STATE - | PSSCAN_VSZ | PSSCAN_RSS - | PSSCAN_STIME | PSSCAN_UTIME - | PSSCAN_TTY, + /**/ | PSSCAN_COMM | PSSCAN_STATE + /**/ | PSSCAN_VSZ | PSSCAN_RSS + /**/ | PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_START_TIME + /**/ | PSSCAN_TTY +#if ENABLE_FEATURE_TOP_SMP_PROCESS + /**/ | PSSCAN_CPU +#endif }; -procps_status_t* alloc_procps_scan(int flags); -void free_procps_scan(procps_status_t* sp); -procps_status_t* procps_scan(procps_status_t* sp, int flags); -pid_t *find_pid_by_name(const char* procName); -pid_t *pidlist_reverse(pid_t *pidList); +//procps_status_t* alloc_procps_scan(void) FAST_FUNC; +void free_procps_scan(procps_status_t* sp) FAST_FUNC; +procps_status_t* procps_scan(procps_status_t* sp, int flags) FAST_FUNC; +/* Format cmdline (up to col chars) into char buf[col+1] */ +/* Puts [comm] if cmdline is empty (-> process is a kernel thread) */ +void read_cmdline(char *buf, int col, unsigned pid, const char *comm) FAST_FUNC; +pid_t *find_pid_by_name(const char* procName) FAST_FUNC; +pid_t *pidlist_reverse(pid_t *pidList) FAST_FUNC; extern const char bb_uuenc_tbl_base64[]; extern const char bb_uuenc_tbl_std[]; -void bb_uuencode(char *store, const void *s, int length, const char *tbl); +void bb_uuencode(char *store, const void *s, int length, const char *tbl) FAST_FUNC; typedef struct sha1_ctx_t { - uint32_t count[2]; - uint32_t hash[5]; - uint32_t wbuf[16]; + uint32_t hash[8]; /* 5, +3 elements for sha256 */ + uint64_t total64; + uint8_t wbuffer[64]; /* NB: always correctly aligned for uint64_t */ + void (*process_block)(struct sha1_ctx_t*) FAST_FUNC; } sha1_ctx_t; -void sha1_begin(sha1_ctx_t *ctx); -void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx); -void *sha1_end(void *resbuf, sha1_ctx_t *ctx); - +void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC; +void sha1_hash(const void *data, size_t length, sha1_ctx_t *ctx) FAST_FUNC; +void sha1_end(void *resbuf, sha1_ctx_t *ctx) FAST_FUNC; +typedef struct sha1_ctx_t sha256_ctx_t; +void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC; +#define sha256_hash sha1_hash +#define sha256_end sha1_end +typedef struct sha512_ctx_t { + uint64_t hash[8]; + uint64_t total64[2]; + uint8_t wbuffer[128]; /* NB: always correctly aligned for uint64_t */ +} sha512_ctx_t; +void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC; +void sha512_hash(const void *buffer, size_t len, sha512_ctx_t *ctx) FAST_FUNC; +void sha512_end(void *resbuf, sha512_ctx_t *ctx) FAST_FUNC; +#if 1 typedef struct md5_ctx_t { uint32_t A; uint32_t B; @@ -904,31 +1361,32 @@ typedef struct md5_ctx_t { uint32_t buflen; char buffer[128]; } md5_ctx_t; -void md5_begin(md5_ctx_t *ctx); -void md5_hash(const void *data, size_t length, md5_ctx_t *ctx); -void *md5_end(void *resbuf, md5_ctx_t *ctx); +#else +/* libbb/md5prime.c uses a bit different one: */ +typedef struct md5_ctx_t { + uint32_t state[4]; /* state (ABCD) */ + uint32_t count[2]; /* number of bits, modulo 2^64 (lsb first) */ + unsigned char buffer[64]; /* input buffer */ +} md5_ctx_t; +#endif +void md5_begin(md5_ctx_t *ctx) FAST_FUNC; +void md5_hash(const void *data, size_t length, md5_ctx_t *ctx) FAST_FUNC; +void md5_end(void *resbuf, md5_ctx_t *ctx) FAST_FUNC; -uint32_t *crc32_filltable(uint32_t *tbl256, int endian); +uint32_t *crc32_filltable(uint32_t *tbl256, int endian) FAST_FUNC; + +typedef struct masks_labels_t { + const char *labels; + const int masks[]; +} masks_labels_t; +int print_flags_separated(const int *masks, const char *labels, + int flags, const char *separator) FAST_FUNC; +int print_flags(const masks_labels_t *ml, int flags) FAST_FUNC; -enum { /* DO NOT CHANGE THESE VALUES! cp.c, mv.c, install.c depend on them. */ - FILEUTILS_PRESERVE_STATUS = 1, - FILEUTILS_DEREFERENCE = 2, - FILEUTILS_RECUR = 4, - FILEUTILS_FORCE = 8, - FILEUTILS_INTERACTIVE = 0x10, - FILEUTILS_MAKE_HARDLINK = 0x20, - FILEUTILS_MAKE_SOFTLINK = 0x40, -#if ENABLE_SELINUX - FILEUTILS_PRESERVE_SECURITY_CONTEXT = 0x80, - FILEUTILS_SET_SECURITY_CONTEXT = 0x100 -#endif -}; -#define FILEUTILS_CP_OPTSTR "pdRfils" USE_SELINUX("c") -extern const struct bb_applet *current_applet; extern const char *applet_name; -/* "BusyBox vN.N.N (timestamp or extra_vestion)" */ +/* "BusyBox vN.N.N (timestamp or extra_version)" */ extern const char bb_banner[]; extern const char bb_msg_memory_exhausted[]; extern const char bb_msg_invalid_date[]; @@ -975,11 +1433,15 @@ extern char bb_common_bufsiz1[COMMON_BUFSIZE]; /* See docs/keep_data_small.txt */ struct globals; /* '*const' ptr makes gcc optimize code much better. - * Magic prevents ptr_to_globals from going into rodata - * If you want to assign a value, use PTR_TO_GLOBALS = xxx */ + * Magic prevents ptr_to_globals from going into rodata. + * If you want to assign a value, use SET_PTR_TO_GLOBALS(x) */ extern struct globals *const ptr_to_globals; -#define PTR_TO_GLOBALS (*(struct globals**)&ptr_to_globals) - +/* At least gcc 3.4.6 on mipsel system needs optimization barrier */ +#define barrier() __asm__ __volatile__("":::"memory") +#define SET_PTR_TO_GLOBALS(x) do { \ + (*(struct globals**)&ptr_to_globals) = (x); \ + barrier(); \ +} while (0) /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it, * use bb_default_login_shell and following defines. @@ -992,7 +1454,6 @@ extern const char bb_default_login_shell[]; /* "sh" */ #define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6) - #if ENABLE_FEATURE_DEVFS # define CURRENT_VC "/dev/vc/0" # define VC_1 "/dev/vc/1" @@ -1014,6 +1475,7 @@ extern const char bb_default_login_shell[]; #endif # define VC_FORMAT "/dev/vc/%d" # define LOOP_FORMAT "/dev/loop/%d" +# define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1) # define LOOP_NAME "/dev/loop/" # define FB_0 "/dev/fb/0" #else @@ -1034,6 +1496,7 @@ extern const char bb_default_login_shell[]; #endif # define VC_FORMAT "/dev/tty%d" # define LOOP_FORMAT "/dev/loop%d" +# define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1) # define LOOP_NAME "/dev/loop" # define FB_0 "/dev/fb0" #endif @@ -1066,12 +1529,12 @@ extern const char bb_default_login_shell[]; #undef isdigit #define isdigit(a) ((unsigned)((a) - '0') <= 9) +#define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0]))) -#ifdef DMALLOC -#include -#endif +#if __GNUC_PREREQ(4,1) +# pragma GCC visibility pop +#endif -#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) #endif /* __LIBBUSYBOX_H__ */