path: root/include/uapi/asm-generic/fcntl.h
diff options
authorLinus Torvalds <torvalds@linux-foundation.org>2014-04-04 14:21:20 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-04 14:21:20 -0700
commitf7789dc0d476e597b0fba52871e777f97d8e3f6e (patch)
treea2f77a68f4339c62ef3db227268db2dd56f83a64 /include/uapi/asm-generic/fcntl.h
parentMerge branch 'cross-rename' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs (diff)
parentlocks: make locks_mandatory_area check for file-private locks (diff)
Merge branch 'locks-3.15' of git://git.samba.org/jlayton/linux
Pull file locking updates from Jeff Layton: "Highlights: - maintainership change for fs/locks.c. Willy's not interested in maintaining it these days, and is OK with Bruce and I taking it. - fix for open vs setlease race that Al ID'ed - cleanup and consolidation of file locking code - eliminate unneeded BUG() call - merge of file-private lock implementation" * 'locks-3.15' of git://git.samba.org/jlayton/linux: locks: make locks_mandatory_area check for file-private locks locks: fix locks_mandatory_locked to respect file-private locks locks: require that flock->l_pid be set to 0 for file-private locks locks: add new fcntl cmd values for handling file private locks locks: skip deadlock detection on FL_FILE_PVT locks locks: pass the cmd value to fcntl_getlk/getlk64 locks: report l_pid as -1 for FL_FILE_PVT locks locks: make /proc/locks show IS_FILE_PVT locks as type "FLPVT" locks: rename locks_remove_flock to locks_remove_file locks: consolidate checks for compatible filp->f_mode values in setlk handlers locks: fix posix lock range overflow handling locks: eliminate BUG() call when there's an unexpected lock on file close locks: add __acquires and __releases annotations to locks_start and locks_stop locks: remove "inline" qualifier from fl_link manipulation functions locks: clean up comment typo locks: close potential race between setlease and open MAINTAINERS: update entry for fs/locks.c
Diffstat (limited to 'include/uapi/asm-generic/fcntl.h')
1 files changed, 16 insertions, 3 deletions
diff --git a/include/uapi/asm-generic/fcntl.h b/include/uapi/asm-generic/fcntl.h
index 95e46c8e05f9..a9b13f8b3595 100644
--- a/include/uapi/asm-generic/fcntl.h
+++ b/include/uapi/asm-generic/fcntl.h
@@ -132,6 +132,22 @@
#define F_GETOWNER_UIDS 17
+ * fd "private" POSIX locks.
+ *
+ * Usually POSIX locks held by a process are released on *any* close and are
+ * not inherited across a fork().
+ *
+ * These cmd values will set locks that conflict with normal POSIX locks, but
+ * are "owned" by the opened file, not the process. This means that they are
+ * inherited across fork() like BSD (flock) locks, and they are only released
+ * automatically when the last reference to the the open file against which
+ * they were acquired is put.
+ */
+#define F_GETLKP 36
+#define F_SETLKP 37
+#define F_SETLKPW 38
#define F_OWNER_TID 0
#define F_OWNER_PID 1
#define F_OWNER_PGRP 2
@@ -186,8 +202,6 @@ struct flock {
-#ifndef CONFIG_64BIT
#ifndef __ARCH_FLOCK64_PAD
#define __ARCH_FLOCK64_PAD
@@ -202,6 +216,5 @@ struct flock64 {
-#endif /* !CONFIG_64BIT */
#endif /* _ASM_GENERIC_FCNTL_H */