diff options
Diffstat (limited to 'posix/execvp.c')
| -rw-r--r-- | posix/execvp.c | 83 |
1 files changed, 41 insertions, 42 deletions
diff --git a/posix/execvp.c b/posix/execvp.c index 7afb01d..3f93357 100644 --- a/posix/execvp.c +++ b/posix/execvp.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 92, 95, 96, 97, 98 Free Software Foundation, Inc. +/* Copyright (C) 1991, 92, 95, 96, 97, 98, 99 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -24,37 +24,31 @@ #include <paths.h> +/* The file is accessible but it is not an executable file. Invoke + the shell to interpret it as a script. */ static void internal_function -execute (const char *file, char *const argv[]) +script_execute (const char *file, char *const argv[]) { - execv (file, argv); - - if (errno == ENOEXEC) - { - /* The file is accessible but it is not an executable file. - Invoke the shell to interpret it as a script. */ - - /* Count the arguments. */ - int argc = 0; - while (argv[argc++]) - ; - - /* Construct an argument list for the shell. */ + /* Count the arguments. */ + int argc = 0; + while (argv[argc++]) + ; + + /* Construct an argument list for the shell. */ + { + char *new_argv[argc + 1]; + new_argv[0] = (char *) _PATH_BSHELL; + new_argv[1] = (char *) file; + while (argc > 1) { - char *new_argv[argc + 1]; - new_argv[0] = (char *) _PATH_BSHELL; - new_argv[1] = (char *) file; - while (argc > 1) - { - new_argv[argc] = argv[argc - 1]; - --argc; - } - - /* Execute the shell. */ - execv (new_argv[0], new_argv); + new_argv[argc] = argv[argc - 1]; + --argc; } - } + + /* Execute the shell. */ + execv (new_argv[0], new_argv); + } } @@ -65,8 +59,6 @@ execvp (file, argv) const char *file; char *const argv[]; { - int got_eacces = 0; - if (*file == '\0') { /* We check the simple case first. */ @@ -75,10 +67,16 @@ execvp (file, argv) } if (strchr (file, '/') != NULL) - /* Don't search when it contains a slash. */ - execute (file, argv); + { + /* Don't search when it contains a slash. */ + execv (file, argv); + + if (errno == ENOEXEC) + script_execute (file, argv); + } else { + int got_eacces = 0; char *path, *p, *name; size_t len; @@ -100,9 +98,7 @@ execvp (file, argv) do { path = p; - p = strchr (path, ':'); - if (p == NULL) - p = strchr (path, '\0'); + p = __strchrnul (path, ':'); if (p == path) /* Two adjacent colons, or a colon at the beginning or the end @@ -113,11 +109,14 @@ execvp (file, argv) /* Construct the pathname to try. */ char *tmp = __mempcpy (name, path, p - path); *tmp++ = '/'; - (void) __mempcpy (tmp, file, len); + memcpy (tmp, file, len); } /* Try to execute this name. If it works, execv will not return. */ - execute (name, argv); + execv (name, argv); + + if (errno == ENOEXEC) + script_execute (name, argv); switch (errno) { @@ -142,13 +141,13 @@ execvp (file, argv) } } while (*p++ != '\0'); - } - - /* We tried every element and none of them worked. */ - if (got_eacces) - /* At least one failure was due to permissions, so report that error. */ - __set_errno (EACCES); + /* We tried every element and none of them worked. */ + if (got_eacces) + /* At least one failure was due to permissions, so report that + error. */ + __set_errno (EACCES); + } /* Return the error from the last attempt (probably ENOENT). */ return -1; |