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libbb: make BB_EXECVP/LP try to exec real binary if there's no /proc/self/exe

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2011-02-02 03:28:56 +01:00
parent 099e528919
commit c71b469f5d
3 changed files with 18 additions and 16 deletions
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12
include/libbb.h
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@ -867,14 +867,16 @@ 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;