From eae59a5681a6725d38f210acbd9ca82ba170c79c Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sun, 8 Jun 2003 22:37:53 +0000 Subject: Update. * sysdeps/unix/sysv/linux/seteuid.c (seteuid): Use setresuid32 syscall directly if possible. If __ASSUME_SETRESUID_SYSCALL is defined drop compatibility code. * sysdeps/unix/sysv/linux/setegid.c (setegid): Use setresgid32 syscall directly if possible. If __ASSUME_SETRESUID_SYSCALL is defined drop compatibility code. * sysdeps/unix/sysv/linux/i386/seteuid.c (seteuid): Use setresuid32 syscall directly if possible. * sysdeps/unix/sysv/linux/i386/setegid.c (setegid): Use setresgid32 syscall directly if possible. --- sysdeps/unix/sysv/linux/i386/setegid.c | 32 ++++++++++++++++++++++++++++++-- sysdeps/unix/sysv/linux/i386/seteuid.c | 20 +++++++++++++------- sysdeps/unix/sysv/linux/i386/setregid.c | 10 ++++++++-- sysdeps/unix/sysv/linux/i386/setreuid.c | 10 ++++++++-- 4 files changed, 59 insertions(+), 13 deletions(-) (limited to 'sysdeps/unix/sysv/linux/i386') 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 #include #include +#include +#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) diff --git a/sysdeps/unix/sysv/linux/i386/seteuid.c b/sysdeps/unix/sysv/linux/i386/seteuid.c index ba0b86d318..87e348a646 100644 --- a/sysdeps/unix/sysv/linux/i386/seteuid.c +++ b/sysdeps/unix/sysv/linux/i386/seteuid.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998, 2000, 2002 Free Software Foundation, Inc. +/* Copyright (C) 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 @@ -17,10 +17,12 @@ 02111-1307 USA. */ #include -#include #include #include +#include +#include "kernel-features.h" + #ifdef __NR_setresuid extern int __setresuid (uid_t ruid, uid_t euid, uid_t suid); @@ -29,21 +31,25 @@ extern int __setresuid (uid_t ruid, uid_t euid, uid_t suid); int seteuid (uid_t uid) { +#if __ASSUME_32BITUIDS > 0 + return INLINE_SYSCALL (setresuid32, 3, -1, uid, -1); +#else int result; /* First try the syscall. */ -#ifdef __NR_setresuid +# ifdef __NR_setresuid result = __setresuid (-1, uid, -1); -#if __ASSUME_SETRESUID_SYSCALL > 0 +# if __ASSUME_SETRESUID_SYSCALL > 0 if (0) -#else +# else if (result == -1 && errno == ENOSYS) -#endif +# endif /* 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. */ -#endif +# endif result = __setreuid (-1, uid); return result; +#endif } libc_hidden_def (seteuid) diff --git a/sysdeps/unix/sysv/linux/i386/setregid.c b/sysdeps/unix/sysv/linux/i386/setregid.c index d49bf47b9d..343bbf4b40 100644 --- a/sysdeps/unix/sysv/linux/i386/setregid.c +++ b/sysdeps/unix/sysv/linux/i386/setregid.c @@ -44,7 +44,7 @@ __setregid (gid_t rgid, gid_t egid) #if __ASSUME_32BITUIDS > 0 return INLINE_SYSCALL (setresgid32, 3, rgid, egid, -1); #else -# ifdef __NR_setregid32 +# ifdef __NR_setresgid32 if (__libc_missing_32bit_uids <= 0) { int result; @@ -66,7 +66,13 @@ __setregid (gid_t rgid, gid_t egid) return -1; } - return INLINE_SYSCALL (setresgid, 3, rgid, egid, -1); +# ifdef __NR_setresgid + int result = INLINE_SYSCALL (setresgid, 3, rgid, egid, -1); +# endif + if (result == -1 && errno == ENOSYS) + result = INLINE_SYSCALL (setregid, 2, rgid, egid); + + return result; #endif } weak_alias (__setregid, setregid) diff --git a/sysdeps/unix/sysv/linux/i386/setreuid.c b/sysdeps/unix/sysv/linux/i386/setreuid.c index 04496c8404..0867170e49 100644 --- a/sysdeps/unix/sysv/linux/i386/setreuid.c +++ b/sysdeps/unix/sysv/linux/i386/setreuid.c @@ -44,7 +44,7 @@ __setreuid (uid_t ruid, uid_t euid) #if __ASSUME_32BITUIDS > 0 return INLINE_SYSCALL (setresuid32, 3, ruid, euid, -1); #else -# ifdef __NR_setreuid32 +# ifdef __NR_setresuid32 if (__libc_missing_32bit_uids <= 0) { int result; @@ -66,7 +66,13 @@ __setreuid (uid_t ruid, uid_t euid) return -1; } - return INLINE_SYSCALL (setresuid, 3, ruid, euid, -1); +# ifdef __NR_setresuid + itn result = INLINE_SYSCALL (setresuid, 3, ruid, euid, -1); +# endif + if (result == -1 && errno == ENOSYS) + result = INLINE_SYSCALL (setreuid, 2, ruid, euid); + + return result; #endif } weak_alias (__setreuid, setreuid) -- cgit v1.2.3