include/busybox.h

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Busybox main internal header file
   4  *
   5  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
   6  */
   7 #ifndef BUSYBOX_H
   8 #define BUSYBOX_H 1
   9
  10 #include "libbb.h"
  11
  12 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
  13
  14 /* order matters: used as index into "install_dir[]" in appletlib.c */
  15 typedef enum bb_install_loc_t {
  16         _BB_DIR_ROOT = 0,
  17         _BB_DIR_BIN,
  18         _BB_DIR_SBIN,
  19 #if ENABLE_INSTALL_NO_USR
  20         _BB_DIR_USR_BIN  = _BB_DIR_BIN,
  21         _BB_DIR_USR_SBIN = _BB_DIR_SBIN,
  22 #else
  23         _BB_DIR_USR_BIN,
  24         _BB_DIR_USR_SBIN,
  25 #endif
  26 } bb_install_loc_t;
  27
  28 typedef enum bb_suid_t {
  29         _BB_SUID_DROP = 0,
  30         _BB_SUID_MAYBE,
  31         _BB_SUID_REQUIRE
  32 } bb_suid_t;
  33
  34
  35 /* Defined in appletlib.c (by including generated applet_tables.h) */
  36 /* Keep in sync with applets/applet_tables.c! */
  37 extern const char applet_names[];
  38 extern int (*const applet_main[])(int argc, char **argv);
  39 extern const uint16_t applet_nameofs[];
  40 extern const uint8_t applet_install_loc[];
  41
  42 #if ENABLE_FEATURE_SUID || ENABLE_FEATURE_PREFER_APPLETS
  43 # define APPLET_NAME(i) (applet_names + (applet_nameofs[i] & 0x0fff))
  44 #else
  45 # define APPLET_NAME(i) (applet_names + applet_nameofs[i])
  46 #endif
  47
  48 #if ENABLE_FEATURE_PREFER_APPLETS
  49 # define APPLET_IS_NOFORK(i) (applet_nameofs[i] & (1 << 12))
  50 # define APPLET_IS_NOEXEC(i) (applet_nameofs[i] & (1 << 13))
  51 #else
  52 # define APPLET_IS_NOFORK(i) 0
  53 # define APPLET_IS_NOEXEC(i) 0
  54 #endif
  55
  56 #if ENABLE_FEATURE_SUID
  57 # define APPLET_SUID(i) ((applet_nameofs[i] >> 14) & 0x3)
  58 #endif
  59
  60 #if ENABLE_FEATURE_INSTALLER
  61 #define APPLET_INSTALL_LOC(i) ({ \
  62         unsigned v = (i); \
  63         if (v & 1) v = applet_install_loc[v/2] >> 4; \
  64         else v = applet_install_loc[v/2] & 0xf; \
  65         v; })
  66 #endif
  67
  68
  69 /* Length of these names has effect on size of libbusybox
  70  * and "individual" binaries. Keep them short.
  71  */
  72 #if ENABLE_BUILD_LIBBUSYBOX
  73 #if ENABLE_FEATURE_SHARED_BUSYBOX
  74 int lbb_main(char **argv) EXTERNALLY_VISIBLE;
  75 #else
  76 int lbb_main(char **argv);
  77 #endif
  78 #endif
  79
  80 POP_SAVED_FUNCTION_VISIBILITY
  81
  82 #endif