hush: use FEATURE_SH_NOFORK to enable NOFORK trick

[oweals/busybox.git] / include / libbb.h

diff --git a/include/libbb.h b/include/libbb.h
index 587a5f95288db2df5fcf84e779a193ad773b7602..88dceb11db01d6c65170f01bcd6cbaa27211ec5b 100644 (file)
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -50,6 +50,9 @@
 # include <selinux/flask.h>
 # include <selinux/av_permissions.h>
 #endif
+#if ENABLE_FEATURE_UTMP
+# include <utmp.h>
+#endif
 #if ENABLE_LOCALE_SUPPORT
 # include <locale.h>
 #else
@@ -68,6 +71,19 @@
 #  include <shadow.h>
 # endif
 #endif
+/* Just in case libc doesn't define some of these... */
+#ifndef _PATH_PASSWD
+#define _PATH_PASSWD  "/etc/passwd"
+#endif
+#ifndef _PATH_GROUP
+#define _PATH_GROUP   "/etc/group"
+#endif
+#ifndef _PATH_SHADOW
+#define _PATH_SHADOW  "/etc/shadow"
+#endif
+#ifndef _PATH_GSHADOW
+#define _PATH_GSHADOW "/etc/gshadow"
+#endif
 #if defined __FreeBSD__ || defined __OpenBSD__
 # include <netinet/in.h>
 # include <arpa/inet.h>
@@ -84,6 +100,15 @@
    typedef unsigned socklen_t;
 # endif
 #endif
+#ifndef HAVE_CLEARENV
+# define clearenv() do { if (environ) environ[0] = NULL; } while (0)
+#endif
+#ifndef HAVE_FDATASYNC
+# define fdatasync fsync
+#endif
+#ifndef HAVE_XTABS
+# define XTABS TAB3
+#endif
 
 
 /* Some libc's forget to declare these, do it ourself */
@@ -220,11 +245,11 @@ typedef unsigned long uoff_t;
 
 /* Macros for min/max.  */
 #ifndef MIN
-#define        MIN(a,b) (((a)<(b))?(a):(b))
+#define MIN(a,b) (((a)<(b))?(a):(b))
 #endif
 
 #ifndef MAX
-#define        MAX(a,b) (((a)>(b))?(a):(b))
+#define MAX(a,b) (((a)>(b))?(a):(b))
 #endif
 
 /* buffer allocation schemes */
@@ -335,9 +360,9 @@ extern char *bb_get_last_path_component_strip(char *path) FAST_FUNC;
 /* "abc/def/" -> "" and it never modifies 'path' */
 extern char *bb_get_last_path_component_nostrip(const char *path) FAST_FUNC;
 
-int ndelay_on(int fd) FAST_FUNC;
-int ndelay_off(int fd) FAST_FUNC;
-int close_on_exec_on(int fd) FAST_FUNC;
+void ndelay_on(int fd) FAST_FUNC;
+void ndelay_off(int fd) FAST_FUNC;
+void close_on_exec_on(int fd) FAST_FUNC;
 void xdup2(int, int) FAST_FUNC;
 void xmove_fd(int, int) FAST_FUNC;
 
@@ -661,6 +686,8 @@ extern char *xmalloc_reads(int fd, char *pfx, size_t *maxsz_p) FAST_FUNC;
 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;
+/* Never returns NULL */
+extern void *xmalloc_xopen_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 \
@@ -673,8 +700,6 @@ extern void setup_unzip_on_fd(int fd /*, int fail_if_not_detected*/) FAST_FUNC;
 /* Autodetects .gz etc */
 extern int open_zipped(const char *fname) FAST_FUNC;
 extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
-/* Never returns NULL */
-extern void *xmalloc_xopen_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
 
 extern ssize_t safe_write(int fd, const void *buf, size_t count) FAST_FUNC;
 // NB: will return short write on error, not -1,
@@ -834,6 +859,7 @@ void FAST_FUNC update_utmp(pid_t pid, int new_type, const char *tty_name, const
 # 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;
@@ -842,14 +868,16 @@ int exists_execable(const char *filename) FAST_FUNC;
  * 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[]) FAST_FUNC;
-#define BB_EXECVP(prog,cmd) bb_execvp(prog,cmd)
+int BB_EXECVP(const char *file, char *const argv[]) FAST_FUNC;
 #define BB_EXECLP(prog,cmd,...) \
-       execlp((find_applet_by_name(prog) >= 0) ? CONFIG_BUSYBOX_EXEC_PATH : prog, \
-               cmd, __VA_ARGS__)
+       do { \
+               if (find_applet_by_name(prog) >= 0) \
+                       execlp(bb_busybox_exec_path, cmd, __VA_ARGS__); \
+               execlp(prog, cmd, __VA_ARGS__); \
+       } while (0)
 #else
 #define BB_EXECVP(prog,cmd)     execvp(prog,cmd)
-#define BB_EXECLP(prog,cmd,...) execlp(prog,cmd, __VA_ARGS__)
+#define BB_EXECLP(prog,cmd,...) execlp(prog,cmd,__VA_ARGS__)
 #endif
 int BB_EXECVP_or_die(char **argv) NORETURN FAST_FUNC;
 
@@ -1195,6 +1223,12 @@ extern void selinux_preserve_fcontext(int fdesc) FAST_FUNC;
 #endif
 extern void selinux_or_die(void) FAST_FUNC;
 
+
+/* systemd support */
+#define SD_LISTEN_FDS_START 3
+int sd_listen_fds(void);
+
+
 /* setup_environment:
  * if chdir pw->pw_dir: ok: else if to_tmp == 1: goto /tmp else: goto / or die
  * if clear_env = 1: cd(pw->pw_dir), clear environment, then set
@@ -1275,7 +1309,7 @@ void add_to_ino_dev_hashtable(const struct stat *statbuf, const char *name) FAST
 void reset_ino_dev_hashtable(void) FAST_FUNC;
 #ifdef __GLIBC__
 /* At least glibc has horrendously large inline for this, so wrap it */
-unsigned long long bb_makedev(unsigned int major, unsigned int minor) FAST_FUNC;
+unsigned long long bb_makedev(unsigned major, unsigned minor) FAST_FUNC;
 #undef makedev
 #define makedev(a,b) bb_makedev(a,b)
 #endif
@@ -1426,6 +1460,7 @@ typedef struct procps_status_t {
        char *argv0;
        char *exe;
        IF_SELINUX(char *context;)
+       IF_FEATURE_SHOW_THREADS(unsigned main_thread_pid;)
        /* Everything below must contain no ptrs to malloc'ed data:
         * it is memset(0) for each process in procps_scan() */
        unsigned long vsz, rss; /* we round it to kbytes */
@@ -1603,10 +1638,10 @@ extern const char bb_path_wtmp_file[];
  * get the list of currently mounted filesystems */
 #define bb_path_mtab_file IF_FEATURE_MTAB_SUPPORT("/etc/mtab")IF_NOT_FEATURE_MTAB_SUPPORT("/proc/mounts")
 
-#define bb_path_passwd_file "/etc/passwd"
-#define bb_path_shadow_file "/etc/shadow"
-#define bb_path_gshadow_file "/etc/gshadow"
-#define bb_path_group_file "/etc/group"
+#define bb_path_passwd_file  _PATH_PASSWD
+#define bb_path_group_file   _PATH_GROUP
+#define bb_path_shadow_file  _PATH_SHADOW
+#define bb_path_gshadow_file _PATH_GSHADOW
 
 #define bb_path_motd_file "/etc/motd"