diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/setegid.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/setegid.c | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/setegid.c b/sysdeps/unix/sysv/linux/i386/setegid.c index 8d7618cdd6..4dc79c7936 100644 --- a/sysdeps/unix/sysv/linux/i386/setegid.c +++ b/sysdeps/unix/sysv/linux/i386/setegid.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1995, 96, 97, 98, 2000, 2002 Free Software Foundation, Inc. +/* Copyright (C) 1995-1998, 2000, 2002, 2003 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 @@ -16,13 +16,41 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ +#include <errno.h> #include <unistd.h> #include <sys/types.h> +#include <sysdep.h> +#include "kernel-features.h" + + +#ifdef __NR_setresgid +extern int __setresgid (uid_t rgid, uid_t egid, uid_t sgid); +#endif + int setegid (gid) gid_t gid; { - return __setregid (-1, gid); +#if __ASSUME_32BITUIDS > 0 + return INLINE_SYSCALL (setresgid32, 3, -1, gid, -1); +#else + int result; + /* First try the syscall. */ +# ifdef __NR_setresgid + result = __setresgid (-1, gid, -1); +# if __ASSUME_SETRESUID_SYSCALL > 0 + if (0) +# else + if (result == -1 && errno == ENOSYS) +# endif + /* No system call available. Use emulation. This may not work + since `setregid' also sets the saved user ID when GID is not + equal to the real user ID, making it impossible to switch back. */ +# endif + result = __setregid (-1, gid); + + return result; +#endif } libc_hidden_def (setegid) |