util-linux/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 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         _BB_DIR_USR_BIN,
  20         _BB_DIR_USR_SBIN
  21 } bb_install_loc_t;
  22
  23 typedef enum bb_suid_t {
  24         _BB_SUID_DROP = 0,
  25         _BB_SUID_MAYBE,
  26         _BB_SUID_REQUIRE
  27 } bb_suid_t;
  28
  29
  30 /* Defined in appletlib.c (by including generated applet_tables.h) */
  31 /* Keep in sync with applets/applet_tables.c! */
  32 extern const char applet_names[];
  33 extern int (*const applet_main[])(int argc, char **argv);
  34 extern const uint16_t applet_nameofs[];
  35 extern const uint8_t applet_install_loc[];
  36
  37 #if ENABLE_FEATURE_SUID || ENABLE_FEATURE_PREFER_APPLETS
  38 #define APPLET_NAME(i) (applet_names + (applet_nameofs[i] & 0x0fff))
  39 #else
  40 #define APPLET_NAME(i) (applet_names + applet_nameofs[i])
  41 #endif
  42
  43 #if ENABLE_FEATURE_PREFER_APPLETS
  44 #define APPLET_IS_NOFORK(i) (applet_nameofs[i] & (1 << 12))
  45 #define APPLET_IS_NOEXEC(i) (applet_nameofs[i] & (1 << 13))
  46 #endif
  47
  48 #if ENABLE_FEATURE_SUID
  49 #define APPLET_SUID(i) ((applet_nameofs[i] >> 14) & 0x3)
  50 #endif
  51
  52 #if ENABLE_FEATURE_INSTALLER
  53 #define APPLET_INSTALL_LOC(i) ({ \
  54         unsigned v = (i); \
  55         if (v & 1) v = applet_install_loc[v/2] >> 4; \
  56         else v = applet_install_loc[v/2] & 0xf; \
  57         v; })
  58 #endif
  59
  60
  61 /* Length of these names has effect on size of libbusybox
  62  * and "individual" binaries. Keep them short.
  63  */
  64 #if ENABLE_BUILD_LIBBUSYBOX
  65 #if ENABLE_FEATURE_SHARED_BUSYBOX
  66 int lbb_main(char **argv) EXTERNALLY_VISIBLE;
  67 #else
  68 int lbb_main(char **argv);
  69 #endif
  70 #endif
  71
  72 POP_SAVED_FUNCTION_VISIBILITY
  73
  74 #endif