* Busybox main internal header file
*
* Based in part on code from sash, Copyright (c) 1999 by David I. Bell
- * Permission has been granted to redistribute this code under the GPL.
+ * Permission has been granted to redistribute this code under GPL.
*
- * Licensed under the GPL version 2, see the file LICENSE in this tarball.
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
#ifndef LIBBB_H
#define LIBBB_H 1
#include <limits.h>
#include <sys/param.h>
#ifdef HAVE_MNTENT_H
-#include <mntent.h>
+# include <mntent.h>
#endif
#ifdef HAVE_SYS_STATFS_H
-#include <sys/statfs.h>
+# include <sys/statfs.h>
#endif
#if ENABLE_SELINUX
-#include <selinux/selinux.h>
-#include <selinux/context.h>
-#include <selinux/flask.h>
-#include <selinux/av_permissions.h>
+# include <selinux/selinux.h>
+# include <selinux/context.h>
+# include <selinux/flask.h>
+# include <selinux/av_permissions.h>
#endif
#if ENABLE_LOCALE_SUPPORT
# include <locale.h>
# include <shadow.h>
# endif
#endif
-#if defined __FreeBSD__
+#if defined __FreeBSD__ || defined __OpenBSD__
# include <netinet/in.h>
# include <arpa/inet.h>
#elif defined __APPLE__
/* 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 XATOOFF(a) xatoi_positive(a)
# define BB_STRTOOFF bb_strtou
# define STRTOOFF strtol
# define OFF_FMT "l"
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 *skip_dev_pfx(const char *tty_name) FAST_FUNC;
+
extern char *strrstr(const char *haystack, const char *needle) FAST_FUNC;
//TODO: supply a pointer to char[11] buffer (avoid statics)?
DIR *xopendir(const char *path) FAST_FUNC;
DIR *warn_opendir(const char *path) FAST_FUNC;
-/* UNUSED: char *xmalloc_realpath(const char *path) FAST_FUNC RETURNS_MALLOC; */
+char *xmalloc_realpath(const char *path) FAST_FUNC RETURNS_MALLOC;
char *xmalloc_readlink(const char *path) FAST_FUNC RETURNS_MALLOC;
char *xmalloc_readlink_or_warn(const char *path) FAST_FUNC RETURNS_MALLOC;
/* !RETURNS_MALLOC: it's a realloc-like function */
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 bb_unsetenv_and_free(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;
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 RETURNS_MALLOC;
+/* Get remote address of connected or accepted socket */
+len_and_sockaddr *get_peer_lsa(int fd) FAST_FUNC RETURNS_MALLOC;
/* 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.
/* 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;
+/* Note: does not use stdio, writes to fd 2 directly */
+int bb_putchar_stderr(char ch) FAST_FUNC;
char *xasprintf(const char *format, ...) __attribute__ ((format(printf, 1, 2))) FAST_FUNC RETURNS_MALLOC;
// gcc-4.1.1 still isn't good enough at optimizing it
// (+200 bytes compared to macro)
extern void *xmalloc_read(int fd, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
/* 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 RETURNS_MALLOC;
+/* Autodetects gzip/bzip2 formats. fd may be in the middle of the file! */
+#if ENABLE_FEATURE_SEAMLESS_LZMA \
+ || ENABLE_FEATURE_SEAMLESS_BZ2 \
+ || ENABLE_FEATURE_SEAMLESS_GZ \
+ /* || ENABLE_FEATURE_SEAMLESS_Z */
+extern void setup_unzip_on_fd(int fd /*, int fail_if_not_detected*/) FAST_FUNC;
+#else
+# define setup_unzip_on_fd(...) ((void)0)
+#endif
/* 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 RETURNS_MALLOC;
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 ssize_t full_write1_str(const char *str) FAST_FUNC;
+extern ssize_t full_write2_str(const char *str) FAST_FUNC;
extern void xopen_xwrite_close(const char* file, const char *str) FAST_FUNC;
/* Close fd, but check for failures (some types of write errors) */
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) FAST_FUNC;
+/* Reverse */
+char* hex2bin(char *dst, const char *str, int count) FAST_FUNC;
/* Generate a UUID */
void generate_uuid(uint8_t *buf) FAST_FUNC;
};
#include "xatonum.h"
/* Specialized: */
+
/* Using xatoi() instead of naive atoi() is not always convenient -
* 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) FAST_FUNC;
+ * dies if input is not in [0, INT_MAX] range. Also will reject '-0' etc.
+ * It should really be named xatoi_nonnegative (since it allows 0),
+ * but that would be too long.
+ */
+int xatoi_positive(const char *numstr) FAST_FUNC;
+
/* Useful for reading port numbers */
uint16_t xatou16(const char *numstr) FAST_FUNC;
#define die_if_bad_username(name) ((void)(name))
#endif
+#if ENABLE_FEATURE_UTMP
+void FAST_FUNC write_new_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname);
+void FAST_FUNC update_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname);
+#else
+# define write_new_utmp(pid, new_type, tty_name, username, hostname) ((void)0)
+# define update_utmp(pid, new_type, tty_name, username, hostname) ((void)0)
+#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;
#define BB_EXECVP(prog,cmd) execvp(prog,cmd)
#define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__)
#endif
+int BB_EXECVP_or_die(char **argv) NORETURN FAST_FUNC;
+
+/* xvfork() can't be a _function_, return after vfork mangles stack
+ * in the parent. It must be a macro. */
+#define xvfork() \
+({ \
+ pid_t bb__xvfork_pid = vfork(); \
+ if (bb__xvfork_pid < 0) \
+ bb_perror_msg_and_die("vfork"); \
+ bb__xvfork_pid; \
+})
+#if BB_MMU
+pid_t xfork(void) FAST_FUNC;
+#endif
-/* NOMMU friendy fork+exec */
+/* NOMMU friendy fork+exec: */
pid_t spawn(char **argv) FAST_FUNC;
pid_t xspawn(char **argv) FAST_FUNC;
pid_t safe_waitpid(pid_t pid, int *wstat, int options) FAST_FUNC;
-/* Unlike waitpid, waits ONLY for one process.
+pid_t wait_any_nohang(int *wstat) FAST_FUNC;
+/* wait4pid: unlike waitpid, waits ONLY for one process.
+ * Returns sig + 0x180 if child is killed by signal.
* 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);
+ * if (rc > 0) bb_error_msg("exit code: %d", rc & 0xff);
*/
int wait4pid(pid_t pid) FAST_FUNC;
-pid_t wait_any_nohang(int *wstat) FAST_FUNC;
-/* wait4pid(spawn(argv)) + NOFORK/NOEXEC (if configured) */
+/* Same as wait4pid(spawn(argv)), but with NOFORK/NOEXEC if configured: */
int spawn_and_wait(char **argv) FAST_FUNC;
struct nofork_save_area {
jmp_buf die_jmp;
* Both of the above will redirect fd 0,1,2 to /dev/null and drop ctty
* (will do setsid()).
*
- * fork_or_rexec(argv) = bare-bones "fork" on MMU,
+ * fork_or_rexec(argv) = bare-bones fork on MMU,
* "vfork + re-exec ourself" on NOMMU. No fd redirection, no setsid().
* On MMU ignores argv.
*
DAEMON_ONLY_SANITIZE = 8, /* internal use */
};
#if BB_MMU
- pid_t fork_or_rexec(void) FAST_FUNC;
enum { re_execed = 0 };
-# define fork_or_rexec(argv) fork_or_rexec()
+# define fork_or_rexec(argv) xfork()
# define bb_daemonize_or_rexec(flags, argv) bb_daemonize_or_rexec(flags)
# define bb_daemonize(flags) bb_daemonize_or_rexec(flags, bogus)
#else
+ extern bool re_execed;
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 xfork() 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
} 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;
+/* delims[0] is a comment char (use '\0' to disable), the rest are token delimiters */
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)
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) FAST_FUNC;
extern void set_current_security_context(security_context_t sid) FAST_FUNC;
* Return of -1 means EOF or error (errno == 0 on EOF).
* buffer[0] is used as a counter of buffered chars and must be 0
* on first call.
+ * timeout:
+ * -2: do not poll for input;
+ * -1: poll(-1) (i.e. block);
+ * >=0: poll for TIMEOUT milliseconds, return -1/EAGAIN on timeout
*/
-int64_t read_key(int fd, char *buffer) FAST_FUNC;
+int64_t read_key(int fd, char *buffer, int timeout) FAST_FUNC;
void read_key_ungets(char *buffer, const char *str, unsigned len) FAST_FUNC;
void read_cmdline(char *buf, int size, 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;
+int starts_with_cpu(const char *str) FAST_FUNC;
+unsigned get_cpu_count(void) FAST_FUNC;
extern const char bb_uuenc_tbl_base64[];
* use bb_default_login_shell and following defines.
* If you change LIBBB_DEFAULT_LOGIN_SHELL,
* don't forget to change increment constant. */
-#define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh"
+#define LIBBB_DEFAULT_LOGIN_SHELL "-/bin/sh"
extern const char bb_default_login_shell[];
/* "/bin/sh" */
-#define DEFAULT_SHELL (bb_default_login_shell+1)
+#define DEFAULT_SHELL (bb_default_login_shell+1)
/* "sh" */
-#define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6)
+#define DEFAULT_SHELL_SHORT_NAME (bb_default_login_shell+6)
+
+/* The following devices are the same on all systems. */
+#define CURRENT_TTY "/dev/tty"
+#define DEV_CONSOLE "/dev/console"
-#if ENABLE_FEATURE_DEVFS
+#if defined(__FreeBSD_kernel__)
+# define CURRENT_VC CURRENT_TTY
+# define VC_1 "/dev/ttyv0"
+# define VC_2 "/dev/ttyv1"
+# define VC_3 "/dev/ttyv2"
+# define VC_4 "/dev/ttyv3"
+# define VC_5 "/dev/ttyv4"
+# define VC_FORMAT "/dev/ttyv%d"
+#elif defined(__GNU__)
+# define CURRENT_VC CURRENT_TTY
+# define VC_1 "/dev/tty1"
+# define VC_2 "/dev/tty2"
+# define VC_3 "/dev/tty3"
+# define VC_4 "/dev/tty4"
+# define VC_5 "/dev/tty5"
+# define VC_FORMAT "/dev/tty%d"
+#elif ENABLE_FEATURE_DEVFS /* from now on, assume Linux naming */
# define CURRENT_VC "/dev/vc/0"
# define VC_1 "/dev/vc/1"
# define VC_2 "/dev/vc/2"
# define VC_3 "/dev/vc/3"
# define VC_4 "/dev/vc/4"
# define VC_5 "/dev/vc/5"
-#if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
+# if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
/* Yes, this sucks, but both SH (including sh64) and H8 have a SCI(F) for their
respective serial ports .. as such, we can't use the common device paths for
these. -- PFM */
# define SC_0 "/dev/ttsc/0"
# define SC_1 "/dev/ttsc/1"
# define SC_FORMAT "/dev/ttsc/%d"
-#else
+# else
# define SC_0 "/dev/tts/0"
# define SC_1 "/dev/tts/1"
# define SC_FORMAT "/dev/tts/%d"
-#endif
+# endif
# define VC_FORMAT "/dev/vc/%d"
# define LOOP_FORMAT "/dev/loop/%d"
# define LOOP_NAMESIZE (sizeof("/dev/loop/") + sizeof(int)*3 + 1)
# define VC_3 "/dev/tty3"
# define VC_4 "/dev/tty4"
# define VC_5 "/dev/tty5"
-#if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
+# if defined(__sh__) || defined(__H8300H__) || defined(__H8300S__)
# define SC_0 "/dev/ttySC0"
# define SC_1 "/dev/ttySC1"
# define SC_FORMAT "/dev/ttySC%d"
-#else
+# else
# define SC_0 "/dev/ttyS0"
# define SC_1 "/dev/ttyS1"
# define SC_FORMAT "/dev/ttyS%d"
-#endif
+# endif
# define VC_FORMAT "/dev/tty%d"
# define LOOP_FORMAT "/dev/loop%d"
# define LOOP_NAMESIZE (sizeof("/dev/loop") + sizeof(int)*3 + 1)
# define FB_0 "/dev/fb0"
#endif
-/* The following devices are the same on devfs and non-devfs systems. */
-#define CURRENT_TTY "/dev/tty"
-#define DEV_CONSOLE "/dev/console"
-
#define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0])))
projects / oweals / busybox.git / blobdiff