X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=include%2Flibbb.h;h=32bb3113d910d8f9e2215eb7134d7150d3d5615c;hb=d46e6d1a55f1182b8aa2d621a2532bad3bc20ee9;hp=72261b760f4e0ecfa5fc3efdbe4fe43a4bd530e6;hpb=3a34d0c08a77ee48edc3f4353cc49b95aba85c2f;p=oweals%2Fbusybox.git diff --git a/include/libbb.h b/include/libbb.h index 72261b760..32bb3113d 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -17,13 +17,14 @@ #include #include #include -#include +#include #include #include #include #include #include #include +#include #include #include #include @@ -41,6 +42,7 @@ #if ENABLE_SELINUX #include +#include #endif #if ENABLE_LOCALE_SUPPORT @@ -121,38 +123,6 @@ /* scary. better ideas? (but do *test* them first!) */ #define OFF_T_MAX ((off_t)~((off_t)1 << (sizeof(off_t)*8-1))) -/* This structure defines protocol families and their handlers. */ -struct aftype { - char *name; - char *title; - int af; - int alen; - char *(*print) (unsigned char *); - char *(*sprint) (struct sockaddr *, int numeric); - int (*input) (int type, char *bufp, struct sockaddr *); - void (*herror) (char *text); - int (*rprint) (int options); - int (*rinput) (int typ, int ext, char **argv); - - /* may modify src */ - int (*getmask) (char *src, struct sockaddr * mask, char *name); - - int fd; - char *flag_file; -}; - -/* This structure defines hardware protocols and their handlers. */ -struct hwtype { - char *name; - char *title; - int type; - int alen; - char *(*print) (unsigned char *); - int (*input) (char *, struct sockaddr *); - int (*activate) (int fd); - int suppress_null_addr; -}; - /* Some useful definitions */ #undef FALSE #define FALSE ((int) 0) @@ -179,7 +149,7 @@ struct hwtype { /* buffer allocation schemes */ #if ENABLE_FEATURE_BUFFERS_GO_ON_STACK -#define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len] +#define RESERVE_CONFIG_BUFFER(buffer,len) char buffer[len] #define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char buffer[len] #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) #else @@ -188,9 +158,9 @@ struct hwtype { #define RESERVE_CONFIG_UBUFFER(buffer,len) static unsigned char buffer[len] #define RELEASE_CONFIG_BUFFER(buffer) ((void)0) #else -#define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer=xmalloc(len) -#define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer=xmalloc(len) -#define RELEASE_CONFIG_BUFFER(buffer) free (buffer) +#define RESERVE_CONFIG_BUFFER(buffer,len) char *buffer = xmalloc(len) +#define RESERVE_CONFIG_UBUFFER(buffer,len) unsigned char *buffer = xmalloc(len) +#define RELEASE_CONFIG_BUFFER(buffer) free(buffer) #endif #endif @@ -220,19 +190,7 @@ struct sysinfo { unsigned int mem_unit; /* Memory unit size in bytes */ char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding: libc5 uses this.. */ }; -extern int sysinfo(struct sysinfo* info); - - -/* Size-saving "small" ints (arch-dependent) */ -#if defined(i386) || defined (__mips__) -/* add other arches which benefit from this... */ -typedef signed char smallint; -typedef unsigned char smalluint; -#else -/* for arches where byte accesses generate larger code: */ -typedef int smallint; -typedef unsigned smalluint; -#endif +int sysinfo(struct sysinfo* info); extern void chomp(char *s); @@ -240,18 +198,24 @@ extern void trim(char *s); extern char *skip_whitespace(const char *); extern char *skip_non_whitespace(const char *); -extern const char *bb_mode_string(int mode); +//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 int recursive_action(const char *fileName, int recurse, - int followLinks, int depthFirst, +enum { + ACTION_RECURSE = (1 << 0), + ACTION_FOLLOWLINKS = (1 << 1), + ACTION_DEPTHFIRST = (1 << 2), + /*ACTION_REVERSE = (1 << 3), - unused */ +}; +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, 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(char *path); +extern char *find_block_device(const char *path); /* 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); @@ -260,45 +224,59 @@ extern void bb_copyfd_exact_size(int fd1, int fd2, off_t 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); -extern int ndelay_on(int fd); -extern int ndelay_off(int fd); + +int ndelay_on(int fd); +int ndelay_off(int fd); +void xmove_fd(int, int); -extern DIR *xopendir(const char *path); -extern DIR *warn_opendir(const char *path); +DIR *xopendir(const char *path); +DIR *warn_opendir(const char *path); -char *xgetcwd(char *cwd); -char *xreadlink(const char *path); +char *xrealloc_getcwd_or_warn(char *cwd); +char *xmalloc_readlink_or_warn(const char *path); char *xmalloc_realpath(const char *path); -extern void xstat(char *filename, struct stat *buf); -extern pid_t spawn(char **argv); -extern pid_t xspawn(char **argv); -extern int wait4pid(int pid); -extern void xsetgid(gid_t gid); -extern void xsetuid(uid_t uid); -extern void xdaemon(int nochdir, int noclose); -extern void xchdir(const char *path); -extern void xsetenv(const char *key, const char *value); -extern int xopen(const char *pathname, int flags); -extern int xopen3(const char *pathname, int flags, int mode); -extern off_t xlseek(int fd, off_t offset, int whence); -extern off_t fdlength(int fd); - - -extern int xsocket(int domain, int type, int protocol); -extern void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen); -extern void xlisten(int s, int backlog); -extern void xconnect(int s, const struct sockaddr *s_addr, socklen_t addrlen); -extern int xconnect_tcp_v4(struct sockaddr_in *s_addr); -extern struct hostent *xgethostbyname(const char *name); -extern struct hostent *xgethostbyname2(const char *name, int af); -extern int setsockopt_reuseaddr(int fd); -extern int setsockopt_broadcast(int fd); - -/* "new" (ipv4+ipv6) API */ + + +//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); +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); +/* NB: returns port in host byte order */ +unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port); typedef struct len_and_sockaddr { - int len; + socklen_t len; union { struct sockaddr sa; struct sockaddr_in sin; @@ -307,34 +285,81 @@ typedef struct len_and_sockaddr { #endif }; } len_and_sockaddr; +enum { + LSA_SIZEOF_SA = sizeof( + union { + struct sockaddr sa; + struct sockaddr_in sin; +#if ENABLE_FEATURE_IPV6 + struct sockaddr_in6 sin6; +#endif + } + ) +}; /* Create stream socket, and allocated suitable lsa * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6)) */ +int xsocket_type(len_and_sockaddr **lsap, int sock_type); int xsocket_stream(len_and_sockaddr **lsap); -/* Create server TCP socket bound to bindaddr:port. bindaddr can be NULL, +/* 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"). - * If there is no suffix, port argument is used */ -extern int create_and_bind_stream_or_die(const char *bindaddr, int 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); /* 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 */ -extern int create_and_connect_stream_or_die(const char *peer, int port); +int create_and_connect_stream_or_die(const char *peer, int port); /* Connect to peer identified by lsa */ -extern int xconnect_stream(const len_and_sockaddr *lsa); +int xconnect_stream(const len_and_sockaddr *lsa); /* 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... */ -extern len_and_sockaddr* host2sockaddr(const char *host, int port); + * 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); +/* 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 +/* 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); +#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))) +#endif /* Assign sin[6]_port member if the socket is of corresponding type, - * otherwise noop. Useful for ftp. + * otherwise no-op. Useful for ftp. * NB: does NOT do htons() internally, just direct assignment. */ -extern void set_nport(len_and_sockaddr *lsa, unsigned port); -/* Retrieve sin[6]_port or return -1 for non-inet lsa's */ -extern int get_nport(len_and_sockaddr *lsa); -extern char* xmalloc_sockaddr2host(const struct sockaddr *sa, socklen_t salen); -extern char* xmalloc_sockaddr2dotted(const struct sockaddr *sa, socklen_t salen); +void set_nport(len_and_sockaddr *lsa, unsigned port); +/* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */ +int get_nport(const struct sockaddr *sa); +/* Reverse DNS. Returns NULL on failure. */ +char* xmalloc_sockaddr2host(const struct sockaddr *sa, socklen_t salen); +/* This one doesn't append :PORTNUM */ +char* xmalloc_sockaddr2host_noport(const struct sockaddr *sa, socklen_t salen); +/* This one also doesn't fall back to dotted IP (returns NULL) */ +char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa, socklen_t salen); +/* 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); +// "old" (ipv4 only) API +// users: traceroute.c hostname.c - use _list_ of all IPs +struct hostent *xgethostbyname(const char *name); +// Also mount.c and inetd.c are using gethostbyname(), +// + inet_common.c has additional IPv4-only stuff + + +void socket_want_pktinfo(int fd); +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); +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); @@ -347,16 +372,18 @@ extern char *xasprintf(const char *format, ...) __attribute__ ((format (printf, //int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; } //static ATTRIBUTE_ALWAYS_INLINE //int NOT_LONE_DASH(const char *s) { return s[0] != '-' || s[1]; } -#define LONE_DASH(s) ((s)[0] == '-' && !(s)[1]) +#define LONE_DASH(s) ((s)[0] == '-' && !(s)[1]) #define NOT_LONE_DASH(s) ((s)[0] != '-' || (s)[1]) -#define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1]) +#define LONE_CHAR(s,c) ((s)[0] == (c) && !(s)[1]) #define NOT_LONE_CHAR(s,c) ((s)[0] != (c) || (s)[1]) +#define DOT_OR_DOTDOT(s) ((s)[0] == '.' && (!(s)[1] || ((s)[1] == '.' && !(s)[2]))) /* 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 *xrealloc(void *old, 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); @@ -390,14 +417,20 @@ extern FILE *fopen_or_warn(const char *filename, const char *mode); /* "Opens" stdin if filename is special, else just opens file: */ extern FILE *fopen_or_warn_stdin(const char *filename); +/* Convert each alpha char in str to lower-case */ +extern char* str_tolower(char *str); -extern void utoa_to_buf(unsigned n, char *buf, unsigned buflen); -extern char *utoa(unsigned n); -extern void itoa_to_buf(int n, char *buf, unsigned buflen); -extern char *itoa(int n); -extern void smart_ulltoa5(unsigned long long ul, char buf[5]); -/* Put a string of hex bytes (ala "1b"), return advanced pointer */ -extern char *bin2hex(char *buf, const char *cp, int count); +char *utoa(unsigned n); +char *itoa(int n); +/* 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]); +//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); +/* Put a string of hex bytes ("1b2e66fe"...), return advanced pointer */ +char *bin2hex(char *buf, const char *cp, int count); struct suffix_mult { const char *suffix; @@ -417,22 +450,126 @@ uint16_t xatou16(const char *numstr); /* 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. */ -extern long xuname2uid(const char *name); -extern long xgroup2gid(const char *name); +long xuname2uid(const char *name); +long xgroup2gid(const char *name); /* wrapper: allows string to contain numeric uid or gid */ -extern unsigned long get_ug_id(const char *s, long (*xname2id)(const char *)); +unsigned long get_ug_id(const char *s, long (*xname2id)(const char *)); /* from chpst. Does not die, returns 0 on failure */ struct bb_uidgid_t { - uid_t uid; - gid_t gid; + uid_t uid; + gid_t gid; }; -extern int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok); +/* always sets uid and gid */ +int get_uidgid(struct bb_uidgid_t*, const char*, int numeric_ok); +/* 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);*/ -extern char *bb_getpwuid(char *name, long uid, int bufsize); -extern char *bb_getgrgid(char *group, long gid, int bufsize); +char *bb_getpwuid(char *name, long uid, int bufsize); +char *bb_getgrgid(char *group, long gid, int bufsize); +/* 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); +/* internally usernames are saved in fixed-sized char[] buffers */ +enum { USERNAME_MAX_SIZE = 16 - sizeof(int) }; + + +struct bb_applet; +int execable_file(const char *name); +char *find_execable(const char *filename); +int exists_execable(const char *filename); + +#if ENABLE_FEATURE_PREFER_APPLETS +int bb_execvp(const char *file, char *const argv[]); +#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, \ + cmd, __VA_ARGS__) +#else +#define BB_EXECVP(prog,cmd) execvp(prog,cmd) +#define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__) +#endif +/* NOMMU friendy fork+exec */ +pid_t spawn(char **argv); +pid_t xspawn(char **argv); + +/* 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); +#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); +struct nofork_save_area { + const struct bb_applet *current_applet; + 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); +/* 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); +/* Helpers for daemonization. + * + * bb_daemonize(flags) = daemonize, does not compile on NOMMU + * + * bb_daemonize_or_rexec(flags, argv) = daemonizes on MMU (and ignores argv), + * rexec's itself on NOMMU with argv passed as command line. + * Thus bb_daemonize_or_rexec may cause your _main() to be re-executed + * from the start. (It will detect it and not reexec again second time). + * You have to audit carefully that you don't do something twice as a result + * (opening files/sockets, parsing config files etc...)! + * + * 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, + * "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid(). + * Currently used for openvt. On MMU ignores argv. + * + * Helper for network daemons in foreground mode: + * + * bb_sanitize_stdio() = make sure that fd 0,1,2 are opened by opening them + * to /dev/null if they are not. + */ +enum { + DAEMON_CHDIR_ROOT = 1, + DAEMON_DEVNULL_STDIO = /* 2 */ 0, /* no users so far */ + 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() +# 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); + extern bool re_execed; +# 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); + + +// TODO: always error out? enum { BB_GETOPT_ERROR = 0x80000000 }; extern const char *opt_complementary; #if ENABLE_GETOPT_LONG @@ -442,15 +579,29 @@ extern uint32_t option_mask32; extern uint32_t getopt32(int argc, char **argv, const char *applet_opts, ...); -typedef struct llist_s { +typedef struct llist_t { char *data; - struct llist_s *link; + struct llist_t *link; } llist_t; -extern void llist_add_to(llist_t **old_head, void *data); -extern void llist_add_to_end(llist_t **list_head, void *data); -extern void *llist_pop(llist_t **elm); -extern void llist_free(llist_t *elm, void (*freeit)(void *data)); -extern llist_t* rev_llist(llist_t *list); +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); +/* 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)) +#else +/* Why? #defining it to 1 gives "warning: statement with no effect"... */ +static ATTRIBUTE_ALWAYS_INLINE int write_pidfile(const char *path) { return 1; } +#define remove_pidfile(f) ((void)0) +#endif enum { LOGMODE_NONE = 0, @@ -459,10 +610,11 @@ enum { LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO, }; extern const char *msg_eol; -extern int logmode; +extern smallint logmode; extern int die_sleep; extern int xfunc_error_retval; -extern void sleep_and_die(void) ATTRIBUTE_NORETURN; +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))); @@ -481,29 +633,69 @@ extern void bb_vinfo_msg(const char *s, va_list p); /* applets which are useful from another applets */ -extern int bb_cat(char** argv); -extern int bb_echo(char** argv); -extern int bb_test(int argc, char** argv); +int bb_cat(char** argv); +int bb_echo(char** argv); +int bb_test(int argc, char** argv); +int kill_main(int argc, char **argv); +#if ENABLE_ROUTE +void bb_displayroutes(int noresolve, int netstatfmt); +#endif +int chown_main(int argc, char **argv); +#if ENABLE_GUNZIP +int gunzip_main(int argc, char **argv); +#endif +int bbunpack(char **argv, + char* (*make_new_name)(char *filename), + USE_DESKTOP(long long) int (*unpacker)(void) +); /* Networking */ int create_icmp_socket(void); int create_icmp6_socket(void); /* interface.c */ -struct aftype; -struct hwtype; +/* This structure defines protocol families and their handlers. */ +struct aftype { + const char *name; + 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); + + /* may modify src */ + int (*getmask) (char *src, struct sockaddr * mask, char *name); +}; +/* This structure defines hardware protocols and their handlers. */ +struct hwtype { + const char *name; + const char *title; + int type; + int alen; + char *(*print) (unsigned char *); + int (*input) (const char *, struct sockaddr *); + int (*activate) (int fd); + int suppress_null_addr; +}; extern int interface_opt_a; int display_interfaces(char *ifname); -struct aftype *get_aftype(const char *name); +const struct aftype *get_aftype(const char *name); const struct hwtype *get_hwtype(const char *name); const struct hwtype *get_hwntype(int type); #ifndef BUILD_INDIVIDUAL -extern struct BB_applet *find_applet_by_name(const char *name); -extern void run_applet_by_name(const char *name, int argc, char **argv); +extern const struct bb_applet *find_applet_by_name(const char *name); +/* 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; #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); @@ -517,9 +709,7 @@ extern int del_loop(const char *device); extern int set_loop(char **device, const char *file, unsigned long long offset); -const char *make_human_readable_str(unsigned long long size, - unsigned long block_size, unsigned long display_unit); - +//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); @@ -528,20 +718,14 @@ extern int bb_parse_mode(const char* s, mode_t* theMode); char *concat_path_file(const char *path, const char *filename); char *concat_subpath_file(const char *path, const char *filename); +/* NB: can violate const-ness (similarly to strchr) */ char *last_char_is(const char *s, int c); -int execable_file(const char *name); -char *find_execable(const char *filename); -int exists_execable(const char *filename); USE_DESKTOP(long long) int uncompress(int fd_in, int fd_out); int inflate(int in, int out); -/* NB: returns port in host byte order */ -unsigned bb_lookup_port(const char *port, const char *protocol, unsigned default_port); -void bb_lookup_host(struct sockaddr_in *s_in, const char *host); - int bb_make_directory(char *path, long mode, int flags); int get_signum(const char *name); @@ -557,7 +741,11 @@ extern void run_shell(const char *shell, int loginshell, const char *command, co #if ENABLE_SELINUX extern void renew_current_security_context(void); extern void set_current_security_context(security_context_t sid); +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); #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); @@ -567,24 +755,57 @@ 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); -#ifdef BB_NOMMU -extern void vfork_daemon(int nochdir, int noclose); -extern void vfork_daemon_rexec(int nochdir, int noclose, - int argc, char **argv, char *foreground_opt); -#endif -extern int get_terminal_width_height(int fd, int *width, int *height); -int is_in_ino_dev_hashtable(const struct stat *statbuf, char **name); +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); #ifdef __GLIBC__ /* At least glibc has horrendously large inline for this, so wrap it */ -extern unsigned long long bb_makedev(unsigned int major, unsigned int minor); +unsigned long long bb_makedev(unsigned int major, unsigned int minor); #undef makedev #define makedev(a,b) bb_makedev(a,b) #endif +#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) +#else +#define MAX_HISTORY 0 +#endif +typedef struct line_input_t { + int flags; + const char *path_lookup; +#if MAX_HISTORY + int cnt_history; + int cur_history; + USE_FEATURE_EDITING_SAVEHISTORY(const char *hist_file;) + char *history[MAX_HISTORY + 1]; +#endif +} line_input_t; +enum { + DO_HISTORY = 1 * (MAX_HISTORY > 0), + SAVE_HISTORY = 2 * (MAX_HISTORY > 0) * ENABLE_FEATURE_EDITING_SAVEHISTORY, + TAB_COMPLETION = 4 * ENABLE_FEATURE_TAB_COMPLETION, + USERNAME_COMPLETION = 8 * ENABLE_FEATURE_USERNAME_COMPLETION, + VI_MODE = 0x10 * ENABLE_FEATURE_EDITING_VI, + 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); +#else +int read_line_input(const char* prompt, char* command, int maxsize); +#define read_line_input(prompt, command, maxsize, state) \ + read_line_input(prompt, command, maxsize) +#endif + + #ifndef COMM_LEN #ifdef TASK_COMM_LEN enum { COMM_LEN = TASK_COMM_LEN }; @@ -597,7 +818,7 @@ typedef struct { DIR *dir; /* Fields are set to 0/NULL if failed to determine (or not requested) */ char *cmd; - unsigned long rss; + unsigned vsz, rss; /* we round it to kbytes */ unsigned long stime, utime; unsigned pid; unsigned ppid; @@ -605,11 +826,12 @@ typedef struct { unsigned sid; unsigned uid; unsigned gid; - /* basename of executable file in call to exec(2), size from */ - /* sizeof(task_struct.comm) in /usr/include/linux/sched.h */ char state[4]; + char tty_str[8]; /* "maj,min" or "?" */ + /* basename of executable in exec(2), read from /proc/N/stat, */ + /* size from sizeof(task_struct.comm) in /usr/include/linux/sched.h */ char comm[COMM_LEN]; -// user/group? - use passwd/group parsing functions + /* user/group? - use passwd/group parsing functions */ } procps_status_t; enum { PSSCAN_PID = 1 << 0, @@ -620,22 +842,23 @@ enum { PSSCAN_COMM = 1 << 5, PSSCAN_CMD = 1 << 6, PSSCAN_STATE = 1 << 7, - PSSCAN_RSS = 1 << 8, - PSSCAN_STIME = 1 << 9, - PSSCAN_UTIME = 1 << 10, + PSSCAN_VSZ = 1 << 8, + PSSCAN_RSS = 1 << 9, + PSSCAN_STIME = 1 << 10, + PSSCAN_UTIME = 1 << 11, + PSSCAN_TTY = 1 << 12, /* These are all retrieved from proc/NN/stat in one go: */ PSSCAN_STAT = PSSCAN_PPID | PSSCAN_PGID | PSSCAN_SID | PSSCAN_COMM | PSSCAN_STATE - | PSSCAN_RSS | PSSCAN_STIME | PSSCAN_UTIME, + | PSSCAN_VSZ | PSSCAN_RSS + | PSSCAN_STIME | PSSCAN_UTIME + | PSSCAN_TTY, }; 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); -void clear_username_cache(void); -const char* get_cached_username(uid_t uid); -const char* get_cached_groupname(gid_t gid); extern const char bb_uuenc_tbl_base64[]; @@ -664,10 +887,10 @@ 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); -uint32_t *crc32_filltable(int endian); +uint32_t *crc32_filltable(uint32_t *tbl256, int endian); -enum { /* DO NOT CHANGE THESE VALUES! cp.c depends on them. */ +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, @@ -675,9 +898,14 @@ enum { /* DO NOT CHANGE THESE VALUES! cp.c depends on them. */ 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" +#define FILEUTILS_CP_OPTSTR "pdRfils" USE_SELINUX("c") +extern const struct bb_applet *current_applet; extern const char *applet_name; extern const char BB_BANNER[]; @@ -695,7 +923,7 @@ extern const char bb_msg_standard_input[]; extern const char bb_msg_standard_output[]; extern const char bb_str_default[]; -/* NB: (bb_hexdigits_upcase[i] | 0x10) -> lowercase hex digit */ +/* NB: (bb_hexdigits_upcase[i] | 0x20) -> lowercase hex digit */ extern const char bb_hexdigits_upcase[]; extern const char bb_path_mtab_file[]; @@ -709,10 +937,24 @@ extern const char bb_path_motd_file[]; extern const char bb_path_wtmp_file[]; extern const char bb_dev_null[]; +extern const int const_int_0; +extern const int const_int_1; + + #ifndef BUFSIZ #define BUFSIZ 4096 #endif -extern char bb_common_bufsiz1[BUFSIZ+1]; +/* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */ +extern char bb_common_bufsiz1[(BUFSIZ > 256*sizeof(void*) ? BUFSIZ : 256*sizeof(void*)) + 1]; +/* This struct is deliberately not defined. */ +/* 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 */ +extern struct globals *const ptr_to_globals; +#define PTR_TO_GLOBALS (*(struct globals**)&ptr_to_globals) + /* You can change LIBBB_DEFAULT_LOGIN_SHELL, but don't use it, * use bb_default_login_shell and following defines. @@ -773,7 +1015,7 @@ extern const char bb_default_login_shell[]; /* The following devices are the same on devfs and non-devfs systems. */ #define CURRENT_TTY "/dev/tty" -#define CONSOLE_DEV "/dev/console" +#define DEV_CONSOLE "/dev/console" #ifndef RB_POWER_OFF