include/busybox.h

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Busybox main internal header file
   4  *
   5  * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
   6  */
   7 #ifndef _BB_INTERNAL_H_
   8 #define _BB_INTERNAL_H_    1
   9
  10 #include "libbb.h"
  11
  12 #if __GNUC_PREREQ(4,1)
  13 # pragma GCC visibility push(hidden)
  14 #endif
  15
  16 /* order matters: used as index into "install_dir[]" in appletlib.c */
  17 typedef enum bb_install_loc_t {
  18         _BB_DIR_ROOT = 0,
  19         _BB_DIR_BIN,
  20         _BB_DIR_SBIN,
  21         _BB_DIR_USR_BIN,
  22         _BB_DIR_USR_SBIN
  23 } bb_install_loc_t;
  24
  25 typedef enum bb_suid_t {
  26         _BB_SUID_NEVER = 0,
  27         _BB_SUID_MAYBE,
  28         _BB_SUID_ALWAYS
  29 } bb_suid_t;
  30
  31
  32 /* Defined in appletlib.c (by including generated applet_tables.h) */
  33 /* Keep in sync with applets/applet_tables.c! */
  34 extern const char applet_names[];
  35 extern int (*const applet_main[])(int argc, char **argv);
  36 extern const uint16_t applet_nameofs[];
  37 extern const uint8_t applet_install_loc[];
  38
  39 #if ENABLE_FEATURE_SUID || ENABLE_FEATURE_PREFER_APPLETS
  40 #define APPLET_NAME(i) (applet_names + (applet_nameofs[i] & 0x0fff))
  41 #else
  42 #define APPLET_NAME(i) (applet_names + applet_nameofs[i])
  43 #endif
  44
  45 #if ENABLE_FEATURE_PREFER_APPLETS
  46 #define APPLET_IS_NOFORK(i) (applet_nameofs[i] & (1 << 12))
  47 #define APPLET_IS_NOEXEC(i) (applet_nameofs[i] & (1 << 13))
  48 #endif
  49
  50 #if ENABLE_FEATURE_SUID
  51 #define APPLET_SUID(i) ((applet_nameofs[i] >> 14) & 0x3)
  52 #endif
  53
  54 #if ENABLE_FEATURE_INSTALLER
  55 #define APPLET_INSTALL_LOC(i) ({ \
  56         unsigned v = (i); \
  57         if (v & 1) v = applet_install_loc[v/2] >> 4; \
  58         else v = applet_install_loc[v/2] & 0xf; \
  59         v; })
  60 #endif
  61
  62
  63 /* Length of these names has effect on size of libbusybox
  64  * and "individual" binaries. Keep them short.
  65  */
  66 #if ENABLE_BUILD_LIBBUSYBOX
  67 #if ENABLE_FEATURE_SHARED_BUSYBOX
  68 int lbb_main(char **argv) EXTERNALLY_VISIBLE;
  69 #else
  70 int lbb_main(char **argv);
  71 #endif
  72 #endif
  73
  74 #if __GNUC_PREREQ(4,1)
  75 # pragma GCC visibility pop
  76 #endif
  77
  78 #endif  /* _BB_INTERNAL_H_ */