diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/seteuid.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/seteuid.c | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/seteuid.c b/sysdeps/unix/sysv/linux/seteuid.c index a1832d64bc..da03a1e6ef 100644 --- a/sysdeps/unix/sysv/linux/seteuid.c +++ b/sysdeps/unix/sysv/linux/seteuid.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998, 1999, 2002, 2003 Free Software Foundation, Inc. +/* Copyright (C) 1998, 1999, 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_setresuid || __ASSUME_SETRESUID_SYSCALL > 0 @@ -40,22 +42,40 @@ seteuid (uid_t uid) } # if __ASSUME_32BITUIDS > 0 && defined __NR_setresuid32 - return INLINE_SYSCALL (setresuid32, 3, -1, uid, -1); + result = INLINE_SYSCALL (setresuid32, 3, -1, uid, -1); # else /* First try the syscall. */ - result = __setresuid (-1, uid, -1); -# if __ASSUME_SETRESUID_SYSCALL == 0 + result = INLINE_SYSCALL (setresuid, 3, -1, uid, -1); +# if __ASSUME_SETRESUID_SYSCALL == 0 if (result == -1 && errno == ENOSYS) /* No system call available. Use emulation. This may not work since `setreuid' also sets the saved user ID when UID is not equal to the real user ID, making it impossible to switch back. */ result = __setreuid (-1, uid); +# 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_setresuid32 + cmd.syscall_no = __NR_setresuid32; +# else + cmd.syscall_no = __NR_setresuid; # endif + cmd.id[0] = -1; + cmd.id[1] = uid; + cmd.id[2] = -1; + __libc_pthread_functions.ptr__nptl_setxid (&cmd); + } +#endif + + return result; } +#ifndef seteuid libc_hidden_def (seteuid) +#endif #else # include <sysdeps/unix/bsd/seteuid.c> #endif |