bb_daemonize_or_rexec(): add flag to double-fork; use it in start-stop-daemon
[oweals/busybox.git] / include / busybox.h
1 /* vi: set sw=4 ts=4: */
2 /*
3  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
4  */
5 #ifndef BUSYBOX_H
6 #define BUSYBOX_H 1
7
8 #include "libbb.h"
9 /* BB_DIR_foo and BB_SUID_bar constants: */
10 #include "applet_metadata.h"
11
12 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
13
14 /* Defined in appletlib.c (by including generated applet_tables.h) */
15 /* Keep in sync with applets/applet_tables.c! */
16 extern const char applet_names[];
17 extern int (*const applet_main[])(int argc, char **argv);
18 extern const uint16_t applet_nameofs[];
19 extern const uint8_t applet_install_loc[];
20
21 #if ENABLE_FEATURE_SUID || ENABLE_FEATURE_PREFER_APPLETS
22 # define APPLET_NAME(i) (applet_names + (applet_nameofs[i] & 0x0fff))
23 #else
24 # define APPLET_NAME(i) (applet_names + applet_nameofs[i])
25 #endif
26
27 #if ENABLE_FEATURE_PREFER_APPLETS
28 # define APPLET_IS_NOFORK(i) (applet_nameofs[i] & (1 << 12))
29 # define APPLET_IS_NOEXEC(i) (applet_nameofs[i] & (1 << 13))
30 #else
31 # define APPLET_IS_NOFORK(i) 0
32 # define APPLET_IS_NOEXEC(i) 0
33 #endif
34
35 #if ENABLE_FEATURE_SUID
36 # define APPLET_SUID(i) ((applet_nameofs[i] >> 14) & 0x3)
37 #endif
38
39 #if ENABLE_FEATURE_INSTALLER
40 #define APPLET_INSTALL_LOC(i) ({ \
41         unsigned v = (i); \
42         if (v & 1) v = applet_install_loc[v/2] >> 4; \
43         else v = applet_install_loc[v/2] & 0xf; \
44         v; })
45 #endif
46
47
48 /* Length of these names has effect on size of libbusybox
49  * and "individual" binaries. Keep them short.
50  */
51 #if ENABLE_BUILD_LIBBUSYBOX
52 #if ENABLE_FEATURE_SHARED_BUSYBOX
53 int lbb_main(char **argv) EXTERNALLY_VISIBLE;
54 #else
55 int lbb_main(char **argv);
56 #endif
57 #endif
58
59 POP_SAVED_FUNCTION_VISIBILITY
60
61 #endif