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authorUlrich Drepper <drepper@redhat.com>2000-01-18 04:33:34 +0000
committerUlrich Drepper <drepper@redhat.com>2000-01-18 04:33:34 +0000
commit0482576eec37874110782f0bae6dd0e1b4a357c6 (patch)
tree87c6c9880dffc5f89b1fc716b52136ee4c72d844 /sysdeps/unix/sysv/linux/semctl.c
parentd316a91962f62fb44c713feac0e82241e8cec1cd (diff)
Update.
2000-01-17 Jakub Jelinek <jakub@redhat.com> * sysdeps/unix/sysv/linux/bits/ipc.h: New file. * sysdeps/unix/sysv/linux/bits/sem.h: New file. * sysdeps/unix/sysv/linux/bits/shm.h: New file. * sysdeps/unix/sysv/linux/bits/msg.h: New file. * sysdeps/unix/sysv/linux/bits/alpha/ipc.h: Update for new ipc. * sysdeps/unix/sysv/linux/bits/alpha/sem.h: New file. * sysdeps/unix/sysv/linux/bits/alpha/shm.h: New file. * sysdeps/unix/sysv/linux/bits/alpha/msg.h: New file. * sysdeps/unix/sysv/linux/bits/sparc/ipc.h: New file. * sysdeps/unix/sysv/linux/bits/sparc/sem.h: New file. * sysdeps/unix/sysv/linux/bits/sparc/shm.h: New file. * sysdeps/unix/sysv/linux/bits/sparc/msg.h: New file. * sysdeps/unix/sysv/linux/msgctl.c (__old_msgctl): Renamed from msgctl. (__new_msgctl): New function. * sysdeps/unix/sysv/linux/semctl.c (__old_semctl): Renamed from semctl. (__new_semctl): New function. * sysdeps/unix/sysv/linux/shmctl.c (__old_shmctl): Renamed from shmctl. (__new_shmctl): New function. * sysdeps/unix/sysv/linux/msgget.c: Define __LIBC_IPC_INTERNAL. * sysdeps/unix/sysv/linux/msgrcv.c: Likewise. * sysdeps/unix/sysv/linux/semget.c: Likewise. * sysdeps/unix/sysv/linux/msgsnd.c: Likewise. * sysdeps/unix/sysv/linux/semop.c: Likewise. * sysdeps/unix/sysv/linux/shmat.c: Likewise. * sysdeps/unix/sysv/linux/shmdt.c: Likewise. * sysdeps/unix/sysv/linux/shmget.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/semctl.c: New file. * sysdeps/unix/sysv/linux/sparc/sparc64/msgctl.c: New file. * sysdeps/unix/sysv/linux/sparc/sparc64/shmctl.c: New file. * sysdeps/unix/sysv/linux/Versions: Add msgctl, semctl, shmctl. 2000-01-17 Jakub Jelinek <jakub@redhat.com> * sysdeps/unix/sysv/linux/sparc/sparc32/seteuid.c: New file. * sysdeps/unix/sysv/linux/sparc/sparc32/setegid.c: New file. * sysdeps/unix/sysv/linux/sparc/sparc32/Dist: Remove setres[ug]id. * sysdeps/unix/sysv/linux/sparc/sparc32/mmap64.c: Kill warnings. * sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list: Define needed syscalls. * sysdeps/unix/sysv/linux/pwrite64.c: Use proper prototype. * sysdeps/unix/sysv/linux/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/kernel-features.h: [gs]etres[ug]id are available on sparc since 2.3.39. * sysdeps/unix/sysv/linux/execve.c: Kill warnings. 2000-01-17 Jakub Jelinek <jakub@redhat.com> * sysdeps/unix/sysv/linux/i386/chown.c (__syscall_chown): Use proper prototype. (__real_chown): Return EINVAL if owner or group are out of the range -1U .. 65534. * sysdeps/unix/sysv/linux/i386/lchown.c (__lchown): Likewise. * sysdeps/unix/sysv/linux/i386/fchown.c (__fchown): Likewise. * sysdeps/unix/sysv/linux/i386/setresuid.c (__setresuid): Return EINVAL if ruid, euid or suid are out of the range -1U .. 65534. * sysdeps/unix/sysv/linux/i386/setresgid.c (__setresgid): Similarly. * sysdeps/unix/sysv/linux/i386/setreuid.c (__setreuid): Simplify. * sysdeps/unix/sysv/linux/i386/setregid.c (__setregid): Likewise. * sysdeps/unix/sysv/linux/m68k/chown.c (__syscall_chown): Use proper prototype. Don't include non-existant header. (__chown): Return EINVAL if owner or group are out of the range -1U .. 65534. * sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list (setresuid, setresgid): Inherit standard linux/syscalls.list definitions. * sysdeps/unix/sysv/linux/sparc/sparc32/setresuid.c: Remove. * sysdeps/unix/sysv/linux/sparc/sparc32/setresgid.c: Remove. * sysdeps/unix/sysv/linux/syscalls.list (setresgid): Provide __setresgid symbol.
Diffstat (limited to 'sysdeps/unix/sysv/linux/semctl.c')
-rw-r--r--sysdeps/unix/sysv/linux/semctl.c88
1 files changed, 86 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/semctl.c b/sysdeps/unix/sysv/linux/semctl.c
index 7a29d7c109..40417b4f1d 100644
--- a/sysdeps/unix/sysv/linux/semctl.c
+++ b/sysdeps/unix/sysv/linux/semctl.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995, 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1997, 1998, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
@@ -17,13 +17,17 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
+#define __LIBC_IPC_INTERNAL
#include <errno.h>
#include <stdarg.h>
#include <sys/sem.h>
#include <sysdep.h>
+#include <string.h>
#include <sys/syscall.h>
+#include "kernel-features.h"
+
/* Define a `union semun' suitable for Linux here. */
union semun
{
@@ -36,9 +40,11 @@ union semun
/* Return identifier for array of NSEMS semaphores associated with
KEY. */
+int __old_semctl (int semid, int semnum, int cmd, ...);
+int __new_semctl (int semid, int semnum, int cmd, ...);
int
-semctl (int semid, int semnum, int cmd, ...)
+__old_semctl (int semid, int semnum, int cmd, ...)
{
union semun arg;
va_list ap;
@@ -52,3 +58,81 @@ semctl (int semid, int semnum, int cmd, ...)
return INLINE_SYSCALL (ipc, 5, IPCOP_semctl, semid, semnum, cmd, &arg);
}
+
+int
+__new_semctl (int semid, int semnum, int cmd, ...)
+{
+ union semun arg;
+ va_list ap;
+
+ va_start (ap, cmd);
+
+ /* Get the argument. */
+ arg = va_arg (ap, union semun);
+
+ va_end (ap);
+
+#if __ASSUME_32BITUIDS > 0
+ return INLINE_SYSCALL (ipc, 5, IPCOP_semctl, semid, semnum, cmd | __IPC_64, &arg);
+#else
+ switch (cmd) {
+ case SEM_STAT:
+ case IPC_STAT:
+ case IPC_SET:
+ break;
+ default:
+ return INLINE_SYSCALL (ipc, 5, IPCOP_semctl, semid, semnum, cmd, &arg);
+ }
+
+ {
+ int save_errno = errno, result;
+ struct __old_semid_ds old;
+ struct semid_ds *buf;
+
+ /* Unfortunately there is no way how to find out for sure whether
+ we should use old or new semctl. */
+ result = INLINE_SYSCALL (ipc, 5, IPCOP_semctl, semid, semnum, cmd | __IPC_64, &arg);
+ if (result != -1 || errno != EINVAL)
+ return result;
+
+ __set_errno(save_errno);
+ buf = arg.buf;
+ arg.buf = (struct semid_ds *)&old;
+ if (cmd == IPC_SET)
+ {
+ old.sem_perm.uid = buf->sem_perm.uid;
+ old.sem_perm.gid = buf->sem_perm.gid;
+ old.sem_perm.mode = buf->sem_perm.mode;
+ if (old.sem_perm.uid != buf->sem_perm.uid ||
+ old.sem_perm.gid != buf->sem_perm.gid)
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+ }
+ result = INLINE_SYSCALL (ipc, 5, IPCOP_semctl, semid, semnum, cmd, &arg);
+ if (result != -1 && cmd != IPC_SET)
+ {
+ memset(buf, 0, sizeof(*buf));
+ buf->sem_perm.__key = old.sem_perm.__key;
+ buf->sem_perm.uid = old.sem_perm.uid;
+ buf->sem_perm.gid = old.sem_perm.gid;
+ buf->sem_perm.cuid = old.sem_perm.cuid;
+ buf->sem_perm.cgid = old.sem_perm.cgid;
+ buf->sem_perm.mode = old.sem_perm.mode;
+ buf->sem_perm.__seq = old.sem_perm.__seq;
+ buf->sem_otime = old.sem_otime;
+ buf->sem_ctime = old.sem_ctime;
+ buf->sem_nsems = old.sem_nsems;
+ }
+ return result;
+ }
+#endif
+}
+
+#if defined PIC && DO_VERSIONING
+default_symbol_version (__new_semctl, semctl, GLIBC_2.2);
+symbol_version (__old_semctl, semctl, GLIBC_2.0);
+#else
+weak_alias (__new_semctl, semctl);
+#endif