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Diffstat (limited to 'sysdeps/unix/sysv/linux/local-setxid.h')
-rw-r--r--sysdeps/unix/sysv/linux/local-setxid.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/local-setxid.h b/sysdeps/unix/sysv/linux/local-setxid.h
new file mode 100644
index 0000000000..0579687982
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/local-setxid.h
@@ -0,0 +1,23 @@
+/* SETxID functions which only have to change the local thread and
+ none of the possible other threads. */
+#include <kernel-features.h>
+#include <sysdep.h>
+
+/* If we can use the syscall directly, use it. */
+#if __ASSUME_32BITUIDS > 0 && defined __NR_setresuid32
+# define local_seteuid(id) INLINE_SYSCALL (setresuid32, 3, -1, id, -1)
+#elif __ASSUME_SETRESUID_SYSCALL > 0
+# define local_seteuid(id) INLINE_SYSCALL (setresuid, 3, -1, id, -1)
+#else
+# define local_seteuid(id) seteuid (id)
+#endif
+
+
+/* If we can use the syscall directly, use it. */
+#if __ASSUME_32BITUIDS > 0 && defined __NR_setresgid32
+# define local_setegid(id) INLINE_SYSCALL (setresgid32, 3, -1, id, -1)
+#elif __ASSUME_SETRESGID_SYSCALL > 0
+# define local_setegid(id) INLINE_SYSCALL (setresgid, 3, -1, id, -1)
+#else
+# define local_setegid(id) setegid (id)
+#endif