diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/setegid.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/setegid.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/sysdeps/unix/sysv/linux/setegid.c b/sysdeps/unix/sysv/linux/setegid.c index 34e64a3dee..33e91c773a 100644 --- a/sysdeps/unix/sysv/linux/setegid.c +++ b/sysdeps/unix/sysv/linux/setegid.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998, 2000, 2002, 2003 Free Software Foundation, Inc. +/* Copyright (C) 1998, 2000, 2002, 2003, 2004 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 @@ -23,6 +23,8 @@ #include <sysdep.h> #include "kernel-features.h" +#include <pthread-functions.h> + #if defined __NR_setresgid || __ASSUME_SETRESGID_SYSCALL > 0 @@ -40,10 +42,10 @@ setegid (gid_t gid) } # if __ASSUME_32BITUIDS > 0 && defined __NR_setresgid32 - return INLINE_SYSCALL (setresgid32, 3, -1, gid, -1); + result = INLINE_SYSCALL (setresgid32, 3, -1, gid, -1); # else /* First try the syscall. */ - result = __setresgid (-1, gid, -1); + result = INLINE_SYSCALL (setresgid, 3, -1, gid, -1); # if __ASSUME_SETRESGID_SYSCALL == 0 if (result == -1 && errno == ENOSYS) /* No system call available. Use emulation. This may not work @@ -51,11 +53,29 @@ setegid (gid_t gid) equal to the real group ID, making it impossible to switch back. */ result = __setregid (-1, gid); # endif +# endif - return result; +#if defined HAVE_PTR__NPTL_SETXID && !defined SINGLE_THREAD + if (result == 0 && __libc_pthread_functions.ptr__nptl_setxid != NULL) + { + struct xid_command cmd; +# ifdef __NR_setresgid32 + cmd.syscall_no = __NR_setresgid32; +# else + cmd.syscall_no = __NR_setresgid; # endif + cmd.id[0] = -1; + cmd.id[1] = gid; + cmd.id[2] = -1; + __libc_pthread_functions.ptr__nptl_setxid (&cmd); + } +#endif + + return result; } +#ifndef setegid libc_hidden_def (setegid) +#endif #else # include <sysdeps/unix/bsd/setegid.c> #endif |