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authorRoland McGrath <roland@gnu.org>1996-02-10 10:00:27 +0000
committerRoland McGrath <roland@gnu.org>1996-02-10 10:00:27 +0000
commit6a032d81581978187f562e5533a32e0a6a3d352b (patch)
tree3d71a420044775c0cb50a38f7cf46ad7b6c9a0c1 /posix/execvp.c
parent56f778c958709876173156cf84f810150b2b8b1a (diff)
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Sat Feb 10 04:18:48 1996 Roland McGrath <roland@churchy.gnu.ai.mit.edu>cvs/libc-960210
* posix/execvp.c: If execv fails with ENOEXEC, run the shell on the file. Fri Feb 9 11:46:45 1996 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * time/Makefile (CFLAGS-zdump.c, CFLAGS-zic.c, CFLAGS-ialloc.c, CFLAGS-scheck.c): Use -DNOID instead of -Wno-unused. * hurd/Makefile (user-interfaces): Added hurd/tioctl.
Diffstat (limited to 'posix/execvp.c')
-rw-r--r--posix/execvp.c55
1 files changed, 45 insertions, 10 deletions
diff --git a/posix/execvp.c b/posix/execvp.c
index 17072ce..76a9ba6 100644
--- a/posix/execvp.c
+++ b/posix/execvp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1992, 1995, 1996 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
@@ -21,6 +21,7 @@ Cambridge, MA 02139, USA. */
#include <stdlib.h>
#include <string.h>
#include <errno.h>
+#include <paths.h>
/* Execute FILE, searching in the `PATH' environment variable if it contains
no slashes, with arguments ARGV and environment from `environ'. */
@@ -29,9 +30,34 @@ execvp (file, argv)
const char *file;
char *const argv[];
{
+ void 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. */
+
+ int argc;
+ char **new_argv;
+
+ /* Count the arguments. */
+ for (argc = 0; argv[argc++];);
+
+ /* Construct an argument list for the shell. */
+ new_argv = __alloca ((argc + 1) * sizeof (char *));
+ for (new_argv[0] = _PATH_BSHELL; argc > 0; --argc)
+ new_argv[argc] = argv[argc - 1];
+
+ /* Execute the shell. */
+ execv (new_argv[0], new_argv);
+ }
+ }
+
if (strchr (file, '/') != NULL)
/* Don't search when it contains a slash. */
- return execv (file, argv);
+ execute (file, argv);
else
{
char *path, *p, *name;
@@ -72,14 +98,23 @@ execvp (file, argv)
}
/* Try to execute this name. If it works, execv will not return. */
- execv (name, argv);
- if (errno != ENOENT && errno != EACCES)
- /* Those errors indicate the file is missing or not executable
- by us, in which case we want to just try the next path
- directory. Some other error means we found an executable
- file, but something went wrong executing it; return the
- error to our caller. */
- return -1;
+ execute (name, argv);
+
+ switch (errno)
+ {
+ case ENOENT:
+ case EACCES:
+ /* Those errors indicate the file is missing or not executable
+ by us, in which case we want to just try the next path
+ directory. */
+ break;
+
+ default:
+ /* Some other error means we found an executable file, but
+ something went wrong executing it; return the error to our
+ caller. */
+ return -1;
+ }
}
while (*p++ != '\0');
}