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libc: add loud debugging to execve

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This commit is contained in:
K. Lange 2018-10-12 15:40:45 +09:00
parent 16caf6efda
commit 23e3681c21
1 changed files with 13 additions and 0 deletions
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13
libc/unistd/execvp.c
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@ -1,3 +1,4 @@
#include <stdio.h>
#include <syscall.h>
#include <stdlib.h>
#include <string.h>
@ -5,10 +6,21 @@
#include <sys/stat.h>
extern char ** environ;
extern char * _argv_0;
extern int __libc_debug;
#define DEFAULT_PATH "/bin:/usr/bin"
int execve(const char *name, char * const argv[], char * const envp[]) {
if (__libc_debug) {
fprintf(stderr, "%s: execve(\"%s\"", _argv_0, name);
char * const* arg = argv;
while (*arg) {
fprintf(stderr,", \"%s\"", *arg);
arg++;
}
fprintf(stderr, ")\n");
}
__sets_errno(syscall_execve((char*)name,(char**)argv,(char**)envp));
}
@ -36,6 +48,7 @@ int execvp(const char *file, char *const argv[]) {
if (!(stat_buf.st_mode & 0111)) {
continue; /* XXX not technically correct; need to test perms */
}
return execve(exe, argv, environ);
}
free(xpath);