We want to allow builds in chroots that lack /bin/sh. Thus, system(3)
and popen(3) need to be tweaked to use the right shell. For the bootstrap
glibc, we just use whatever `sh' can be found in $PATH. The final glibc
instead uses the hard-coded absolute file name of `bash'.
--- a/sysdeps/posix/system.c
+++ b/sysdeps/posix/system.c
@@ -134,7 +134,7 @@ do_system (const char *line)
INIT_LOCK ();
/* Exec the shell. */
- (void) __execve (SHELL_PATH, (char *const *) new_argv, __environ);
+ (void) __execvpe (SHELL_NAME, (char *const *) new_argv, __environ);
_exit (127);
}
else if (pid < (pid_t) 0)
--- a/libio/iopopen.c
+++ b/libio/iopopen.c
@@ -145,7 +145,7 @@ _IO_new_proc_open (fp, command, mode)
_IO_close (fd);
}
- _IO_execl ("/bin/sh", "sh", "-c", command, (char *) 0);
+ execlp ("sh", "sh", "-c", command, (char *) 0);
_IO__exit (127);
}
_IO_close (child_end);