#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
+#include <mntent.h>
#include <netdb.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stddef.h>
#include <string.h>
-#include <strings.h>
+/* #include <strings.h> - said to be obsolete */
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/socket.h>
/* 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 {
- 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;
-};
-
/* Some useful definitions */
#undef FALSE
#define FALSE ((int) 0)
/* 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
#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
+#if defined(__GLIBC__)
+/* glibc uses __errno_location() to get a ptr to errno */
+/* We can just memorize it once - no multithreading in busybox :) */
+extern int *const bb_errno;
+#undef errno
+#define errno (*bb_errno)
+#endif
+
#if defined(__GLIBC__) && __GLIBC__ < 2
int vdprintf(int d, const char *format, va_list ap);
#endif
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);
+int sysinfo(struct sysinfo* info);
+unsigned long long monotonic_us(void);
+unsigned monotonic_sec(void);
extern void chomp(char *s);
extern void trim(char *s);
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_FOLLOWLINKS_L0 = (1 << 2),
+ ACTION_DEPTHFIRST = (1 << 3),
+ /*ACTION_REVERSE = (1 << 4), - 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, 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);
/* 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 xdup2(int, int);
+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 *xrealloc_getcwd_or_warn(char *cwd);
char *xmalloc_readlink_or_warn(const char *path);
char *xmalloc_realpath(const char *path);
-extern void xstat(const 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);
-/* More clever/thorough xdaemon */
-extern void bb_sanitize_stdio_maybe_daemonize(int daemonize);
-extern void bb_sanitize_stdio(void);
-/* NB: be careful: dont open syslog/network sockets before bb_daemonize */
-extern void bb_daemonize(void);
-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);
+//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);
-int setsockopt_reuseaddr(int fd);
+ssize_t xsendto(int s, const void *buf, size_t len, const struct sockaddr *to,
+ socklen_t tolen);
+/* 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); /* On Linux this never fails. */
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);
#endif
};
} len_and_sockaddr;
-/* Create stream socket, and allocated suitable lsa
- * (lsa of correct size and lsa->sa.sa_family (AF_INET/AF_INET6)) */
+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 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.
+ */
+int xsocket_type(len_and_sockaddr **lsap, USE_FEATURE_IPV6(int af,) 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 */
+ * Only if there is no suffix, port argument is used */
+/* NB: these set SO_REUSEADDR before bind */
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").
#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,
+/* 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);
/* Retrieve sin[6]_port or return -1 for non-INET[6] lsa's */
-int get_nport(const len_and_sockaddr *lsa);
+int get_nport(const struct sockaddr *sa);
/* Reverse DNS. Returns NULL on failure. */
-char* xmalloc_sockaddr2host(const struct sockaddr *sa, socklen_t salen);
+char* xmalloc_sockaddr2host(const struct sockaddr *sa);
/* 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);
/* 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);
/* 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);
+char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa);
// "old" (ipv4 only) API
-// users: traceroute.c hostname.c
+// users: traceroute.c hostname.c - use _list_ of all IPs
struct hostent *xgethostbyname(const char *name);
-// Also inetd.c and inetd.c are using gethostbyname(),
+// 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);
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)));
// gcc-4.1.1 still isn't good enough at optimizing it
// (+200 bytes compared to macro)
-//static ATTRIBUTE_ALWAYS_INLINE
+//static ALWAYS_INLINE
//int LONE_DASH(const char *s) { return s[0] == '-' && !s[1]; }
-//static ATTRIBUTE_ALWAYS_INLINE
+//static 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);
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);
/* "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);
+/* Last element is marked by mult == 0 */
struct suffix_mult {
- const char *suffix;
+ char suffix[4];
unsigned mult;
};
#include "xatonum.h"
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);*/
-char *bb_getpwuid(char *name, long uid, int bufsize);
-char *bb_getgrgid(char *group, long gid, int bufsize);
+/* bb_getpwuid, bb_getgrgid:
+ * bb_getXXXid(buf, bufsz, id) - copy user/group name or id
+ * as a string to buf, return user/group name or NULL
+ * bb_getXXXid(NULL, 0, id) - return user/group name or NULL
+ * bb_getXXXid(NULL, -1, id) - return user/group name or exit
+*/
+char *bb_getpwuid(char *name, int bufsize, long uid);
+char *bb_getgrgid(char *group, int bufsize, long gid);
/* 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);
enum { USERNAME_MAX_SIZE = 16 - sizeof(int) };
-enum { BB_GETOPT_ERROR = 0x80000000 };
+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 {
+ jmp_buf die_jmp;
+ 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 <applet>_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,
+ DAEMON_CLOSE_EXTRA_FDS = 4,
+ DAEMON_ONLY_SANITIZE = 8, /* internal use */
+};
+#if BB_MMU
+ void forkexit_or_rexec(void);
+ enum { re_execed = 0 };
+# 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 re_exec(char **argv) ATTRIBUTE_NORETURN;
+ 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);
+
+
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, ...);
-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_unlink(llist_t **head, llist_t *elm);
-extern void llist_free(llist_t *elm, void (*freeit)(void *data));
-extern llist_t* llist_rev(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... */
+
+/* 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);
+#define remove_pidfile(path) do { if (wrote_pidfile) unlink(path); } while (0)
+#else
+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;
-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)));
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 */
int bb_cat(char** argv);
int bb_echo(char** argv);
-int bb_test(int argc, char** argv);
+int test_main(int argc, char** argv);
+int kill_main(int argc, char **argv);
#if ENABLE_ROUTE
void bb_displayroutes(int noresolve, int netstatfmt);
#endif
int create_icmp_socket(void);
int create_icmp6_socket(void);
/* interface.c */
-extern int interface_opt_a;
+/* 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 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);
#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);
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);
+/* 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);
-//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);
-
//TODO: pass buf pointer or return allocated buf (avoid statics)?
char *bb_askpass(int timeout, const char * prompt);
int bb_ask_confirmation(void);
char *concat_path_file(const char *path, const char *filename);
char *concat_subpath_file(const char *path, const char *filename);
+const char *bb_basename(const char *name);
+/* 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);
-
-#if ENABLE_FEATURE_EXEC_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
USE_DESKTOP(long long) int uncompress(int fd_in, int fd_out);
int inflate(int in, int out);
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);
+/* Returns a ptr to static storage */
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 int index_in_str_array(const char *const string_array[], const char *key);
+extern int index_in_strings(const char *strings, const char *key);
+extern int index_in_substr_array(const char *const string_array[], const char *key);
+extern int index_in_substrings(const char *strings, 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_rexec(int nochdir, int noclose, char **argv);
+
+/* 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);
+
+/* Returns number of lines changed, or -1 on error */
+extern int update_passwd(const char *filename, const char *username,
+ const char *new_pw);
+
+/* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */
+int get_terminal_width_height(int fd, int *width, int *height);
+
+int ioctl_or_perror(int fd, int request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5)));
+void ioctl_or_perror_and_die(int fd, int request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5)));
+#if ENABLE_IOCTL_HEX2STR_ERROR
+int bb_ioctl_or_warn(int fd, int request, void *argp, const char *ioctl_name);
+void bb_xioctl(int fd, int request, void *argp, const char *ioctl_name);
+#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, int request, void *argp);
+void bb_xioctl(int fd, int request, void *argp);
+#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 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
#else
#define MAX_HISTORY 0
#endif
-struct line_input_t {
+typedef struct line_input_t {
int flags;
const char *path_lookup;
#if MAX_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,
WITH_PATH_LOOKUP = 0x20,
FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION,
};
-typedef struct line_input_t line_input_t;
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
typedef struct {
DIR *dir;
/* Fields are set to 0/NULL if failed to determine (or not requested) */
- char *cmd;
- unsigned long vsz;
+ /*char *cmd;*/
+ char *argv0;
+ /*char *exe;*/
+ 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 stime, utime;
unsigned pid;
unsigned ppid;
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 */
+ unsigned tty_major,tty_minor;
char state[4];
+ /* 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
+ /* user/group? - use passwd/group parsing functions */
} procps_status_t;
enum {
PSSCAN_PID = 1 << 0,
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_STIME = 1 << 9,
- PSSCAN_UTIME = 1 << 10,
+ /* 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,
+ USE_SELINUX(PSSCAN_CONTEXT = 1 << 15,)
/* 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_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);
+/* 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);
pid_t *find_pid_by_name(const char* procName);
pid_t *pidlist_reverse(pid_t *pidList);
extern const char bb_uuenc_tbl_base64[];
extern const char bb_uuenc_tbl_std[];
-void bb_uuencode(const unsigned char *s, char *store, const int length, const char *tbl);
+void bb_uuencode(char *store, const void *s, int length, const char *tbl);
typedef struct sha1_ctx_t {
uint32_t count[2];
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, mv.c, install.c depend on them. */
};
#define FILEUTILS_CP_OPTSTR "pdRfils" USE_SELINUX("c")
-extern smallint re_execed;
+extern const struct bb_applet *current_applet;
extern const char *applet_name;
-extern const char BB_BANNER[];
-
-extern const char bb_msg_full_version[];
+/* "BusyBox vN.N.N (timestamp or extra_vestion)" */
+extern const char bb_banner[];
extern const char bb_msg_memory_exhausted[];
extern const char bb_msg_invalid_date[];
extern const char bb_msg_read_error[];
extern const char bb_hexdigits_upcase[];
extern const char bb_path_mtab_file[];
-extern const char bb_path_nologin_file[];
extern const char bb_path_passwd_file[];
extern const char bb_path_shadow_file[];
extern const char bb_path_gshadow_file[];
extern const char bb_path_group_file[];
-extern const char bb_path_securetty_file[];
extern const char bb_path_motd_file[];
extern const char bb_path_wtmp_file[];
extern const char bb_dev_null[];
+extern const char bb_busybox_exec_path[];
+/* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin,
+ * but I want to save a few bytes here */
+extern const char bb_PATH_root_path[]; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */
+#define bb_default_root_path (bb_PATH_root_path + sizeof("PATH"))
+#define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin"))
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) */
+enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) };
+extern char bb_common_bufsiz1[COMMON_BUFSIZE];
/* This struct is deliberately not defined. */
/* See docs/keep_data_small.txt */
struct globals;
-/* Magic prevents this from going into rodata */
-/* If you want to assign a value, use PTR_TO_GLOBALS = xxx */
+/* '*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.
* If you change LIBBB_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
#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
#include <dmalloc.h>
#endif
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
#endif /* __LIBBUSYBOX_H__ */
projects / oweals / busybox.git / blobdiff