#include <stdarg.h>
#include <stddef.h>
#include <string.h>
-/* #include <strings.h> - said to be obsolete */
#include <sys/poll.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <time.h>
#include <unistd.h>
#include <utime.h>
+/* Try to pull in PATH_MAX */
+#include <limits.h>
+#include <sys/param.h>
+#ifndef PATH_MAX
+#define PATH_MAX 256
+#endif
#if ENABLE_SELINUX
#include <selinux/selinux.h>
#include <selinux/context.h>
+#include <selinux/flask.h>
+#include <selinux/av_permissions.h>
#endif
#if ENABLE_LOCALE_SUPPORT
#include "shadow_.h"
#endif
-/* Try to pull in PATH_MAX */
-#include <limits.h>
-#include <sys/param.h>
-#ifndef PATH_MAX
-#define PATH_MAX 256
+/* Some libc's don't declare it, help them */
+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 <libgen.h> 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);
+
-/* Tested to work correctly (IIRC :]) */
+/* Tested to work correctly with all int types (IIRC :]) */
#define MAXINT(T) (T)( \
((T)-1) > 0 \
? (T)-1 \
)
/* 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"
#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 :) */
#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 <libgen.h> 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_us(void);
unsigned monotonic_sec(void);
/* 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);
+/* 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);
+/* "abc/def/" -> "" and it never modifies 'path' */
+extern char *bb_get_last_path_component_nostrip(const char *path);
int ndelay_on(int fd);
int ndelay_off(int fd);
+int close_on_exec_on(int fd);
void xdup2(int, int);
void xmove_fd(int, int);
DIR *xopendir(const char *path);
DIR *warn_opendir(const char *path);
-char *xrealloc_getcwd_or_warn(char *cwd);
+/* UNUSED: char *xmalloc_realpath(const char *path); */
+char *xmalloc_readlink(const char *path);
char *xmalloc_readlink_or_warn(const char *path);
-char *xmalloc_realpath(const char *path);
+char *xrealloc_getcwd_or_warn(char *cwd);
+char *xmalloc_follow_symlinks(const char *path);
//TODO: signal(sid, f) is the same? then why?
extern void sig_catch(int,void (*)(int));
off_t xlseek(int fd, off_t offset, int whence);
off_t fdlength(int fd);
+/* 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
+ | AF_PACKET
+ | AF_NETLINK
+ /* | AF_DECnet */
+ /* | AF_IPX */
+ ) <= 127 ? 1 : -1];
+};
+
+
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);
};
/* 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);
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)));
+char *xstrdup(const char *s);
+char *xstrndup(const char *s, int n);
+char *safe_strncpy(char *dst, const char *src, size_t size);
+/* 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);
+char *xasprintf(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
+/* 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);
// gcc-4.1.1 still isn't good enough at optimizing it
// (+200 bytes compared to macro)
//static ALWAYS_INLINE
/* 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: */
+/* Reads up to (and including) TERMINATING_STRING: */
extern char *xmalloc_fgets_str(FILE *file, const char *terminating_string);
+/* Chops off TERMINATING_STRING: from the end: */
+extern char *xmalloc_fgetline_str(FILE *file, const char *terminating_string);
+/* Reads up to (and including) "\n" or NUL byte */
+extern char *xmalloc_fgets(FILE *file);
/* 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);
/* "Opens" stdin if filename is special, else just opens file: */
extern FILE *fopen_or_warn_stdin(const char *filename);
+/* 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);
+
/* Convert each alpha char in str to lower-case */
-extern char* str_tolower(char *str);
+char* str_tolower(char *str);
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]);
+/* Intelligent formatters of bignums */
+void smart_ulltoa4(unsigned long long ul, char buf[5], const char *scale);
+void smart_ulltoa5(unsigned long long ul, char buf[5], const char *scale);
//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);
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);
+/* 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[]);
#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)
* if (rc < 0) bb_perror_msg("%s", argv[0]);
* if (rc > 0) bb_error_msg("exit code: %d", rc);
*/
+int safe_waitpid(int pid, int *wstat, int options);
int wait4pid(int pid);
-int wait_pid(int *wstat, int pid);
-int wait_nohang(int *wstat);
+int wait_any_nohang(int *wstat);
#define wait_crashed(w) ((w) & 127)
#define wait_exitcode(w) ((w) >> 8)
#define wait_stopsig(w) ((w) >> 8)
int spawn_and_wait(char **argv);
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;
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);
+int run_nofork_applet(int applet_no, char **argv);
+int run_nofork_applet_prime(struct nofork_save_area *old, int applet_no, char **argv);
/* Helpers for daemonization.
*
#endif
void bb_daemonize_or_rexec(int flags, char **argv);
void bb_sanitize_stdio(void);
+/* Clear dangerous stuff, set PATH */
+void sanitize_env_for_suid(void);
extern const char *opt_complementary;
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_show_usage(void) ATTRIBUTE_NORETURN;
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_simple_perror_msg(const char *s);
extern void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
+extern void bb_simple_perror_msg_and_die(const char *s) __attribute__ ((noreturn));
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_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2)));
extern void bb_verror_msg(const char *s, va_list p, const char *strerr);
+/* 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);
+int echo_main(int argc, char** argv) MAIN_EXTERNALLY_VISIBLE;
+int test_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int kill_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
#if ENABLE_ROUTE
void bb_displayroutes(int noresolve, int netstatfmt);
#endif
-int chown_main(int argc, char **argv);
+int chown_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
#if ENABLE_GUNZIP
-int gunzip_main(int argc, char **argv);
+int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+#endif
+#if ENABLE_BUNZIP2
+int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
#endif
int bbunpack(char **argv,
char* (*make_new_name)(char *filename),
#ifndef BUILD_INDIVIDUAL
-extern const struct bb_applet *find_applet_by_name(const char *name);
+extern int 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;
+extern void run_applet_no_and_exit(int a, char **argv) ATTRIBUTE_NORETURN;
#endif
extern int match_fstype(const struct mntent *mt, const char *fstypes);
//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);
extern int bb_parse_mode(const char* s, mode_t* theMode);
int get_signum(const char *name);
const char *get_signame(int number);
+void print_signames(void);
char *bb_simplify_path(const char *path);
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) ATTRIBUTE_NORETURN;
extern void run_shell(const char *shell, int loginshell, const char *command, const char **additional_args);
#if ENABLE_SELINUX
extern void renew_current_security_context(void);
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);
+extern void selinux_preserve_fcontext(int fdesc);
+#else
+#define selinux_preserve_fcontext(fdesc) ((void)0)
#endif
extern void selinux_or_die(void);
extern int restricted_shell(const char *shell);
+
+/* setup_environment:
+ * if loginshell = 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 changeenv = 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 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_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);
+
+int index_in_str_array(const char *const string_array[], const char *key);
+int index_in_strings(const char *strings, const char *key);
+int index_in_substr_array(const char *const string_array[], const char *key);
+int index_in_substrings(const char *strings, const char *key);
+const char *nth_string(const char *strings, int n);
+
extern void print_login_issue(const char *issue_file, const char *tty);
extern void print_login_prompt(void);
FOR_SHELL = DO_HISTORY | SAVE_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION,
};
line_input_t *new_line_input_t(int flags);
+/* Returns:
+ * -1 on read errors or EOF, or on bare Ctrl-D.
+ * 0 on ctrl-C,
+ * >0 length of input string, including terminating '\n'
+ * [is this true? stores "" in 'command' if return value is 0 or -1]
+ */
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);
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;
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
* (if executable is symlink or script, it is NOT replaced
PSSCAN_STIME = 1 << 12,
PSSCAN_UTIME = 1 << 13,
PSSCAN_TTY = 1 << 14,
- USE_SELINUX(PSSCAN_CONTEXT = 1 << 15,)
+ PSSCAN_SMAPS = (1 << 15) * ENABLE_FEATURE_TOPMEM,
+ PSSCAN_ARGVN = (1 << 16) * (ENABLE_PGREP | ENABLE_PKILL),
+ USE_SELINUX(PSSCAN_CONTEXT = 1 << 17,)
+ PSSCAN_START_TIME = 1 << 18,
/* 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_STIME | PSSCAN_UTIME | PSSCAN_START_TIME
| PSSCAN_TTY,
};
procps_status_t* alloc_procps_scan(int flags);
};
#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[];
#include <dmalloc.h>
#endif
-
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#endif /* __LIBBUSYBOX_H__ */
projects / oweals / busybox.git / blobdiff