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-rw-r--r--fs/attr.c2
-rw-r--r--fs/utimes.c17
-rw-r--r--include/linux/fs.h33
3 files changed, 22 insertions, 30 deletions
diff --git a/fs/attr.c b/fs/attr.c
index 966b73e25f82..765fc75fab3b 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -51,7 +51,7 @@ int inode_change_ok(struct inode *inode, struct iattr *attr)
51 } 51 }
52 52
53 /* Check for setting the inode time. */ 53 /* Check for setting the inode time. */
54 if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) { 54 if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)) {
55 if (!is_owner_or_cap(inode)) 55 if (!is_owner_or_cap(inode))
56 goto error; 56 goto error;
57 } 57 }
diff --git a/fs/utimes.c b/fs/utimes.c
index b6b664e7145e..ecf8941ba34a 100644
--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -101,7 +101,6 @@ long do_utimes(int dfd, char __user *filename, struct timespec *times, int flags
101 times[1].tv_nsec == UTIME_NOW) 101 times[1].tv_nsec == UTIME_NOW)
102 times = NULL; 102 times = NULL;
103 103
104 /* In most cases, the checks are done in inode_change_ok() */
105 newattrs.ia_valid = ATTR_CTIME | ATTR_MTIME | ATTR_ATIME; 104 newattrs.ia_valid = ATTR_CTIME | ATTR_MTIME | ATTR_ATIME;
106 if (times) { 105 if (times) {
107 error = -EPERM; 106 error = -EPERM;
@@ -123,21 +122,13 @@ long do_utimes(int dfd, char __user *filename, struct timespec *times, int flags
123 newattrs.ia_mtime.tv_nsec = times[1].tv_nsec; 122 newattrs.ia_mtime.tv_nsec = times[1].tv_nsec;
124 newattrs.ia_valid |= ATTR_MTIME_SET; 123 newattrs.ia_valid |= ATTR_MTIME_SET;
125 } 124 }
126
127 /* 125 /*
128 * For the UTIME_OMIT/UTIME_NOW and UTIME_NOW/UTIME_OMIT 126 * Tell inode_change_ok(), that this is an explicit time
129 * cases, we need to make an extra check that is not done by 127 * update, even if neither ATTR_ATIME_SET nor ATTR_MTIME_SET
130 * inode_change_ok(). 128 * were used.
131 */ 129 */
132 if (((times[0].tv_nsec == UTIME_NOW && 130 newattrs.ia_valid |= ATTR_TIMES_SET;
133 times[1].tv_nsec == UTIME_OMIT)
134 ||
135 (times[0].tv_nsec == UTIME_OMIT &&
136 times[1].tv_nsec == UTIME_NOW))
137 && !is_owner_or_cap(inode))
138 goto mnt_drop_write_and_out;
139 } else { 131 } else {
140
141 /* 132 /*
142 * If times is NULL (or both times are UTIME_NOW), 133 * If times is NULL (or both times are UTIME_NOW),
143 * then we need to check permissions, because 134 * then we need to check permissions, because
diff --git a/include/linux/fs.h b/include/linux/fs.h
index d8721e818b45..527b9e482f99 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -320,22 +320,23 @@ typedef void (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
320 * Attribute flags. These should be or-ed together to figure out what 320 * Attribute flags. These should be or-ed together to figure out what
321 * has been changed! 321 * has been changed!
322 */ 322 */
323#define ATTR_MODE 1 323#define ATTR_MODE (1 << 0)
324#define ATTR_UID 2 324#define ATTR_UID (1 << 1)
325#define ATTR_GID 4 325#define ATTR_GID (1 << 2)
326#define ATTR_SIZE 8 326#define ATTR_SIZE (1 << 3)
327#define ATTR_ATIME 16 327#define ATTR_ATIME (1 << 4)
328#define ATTR_MTIME 32 328#define ATTR_MTIME (1 << 5)
329#define ATTR_CTIME 64 329#define ATTR_CTIME (1 << 6)
330#define ATTR_ATIME_SET 128 330#define ATTR_ATIME_SET (1 << 7)
331#define ATTR_MTIME_SET 256 331#define ATTR_MTIME_SET (1 << 8)
332#define ATTR_FORCE 512 /* Not a change, but a change it */ 332#define ATTR_FORCE (1 << 9) /* Not a change, but a change it */
333#define ATTR_ATTR_FLAG 1024 333#define ATTR_ATTR_FLAG (1 << 10)
334#define ATTR_KILL_SUID 2048 334#define ATTR_KILL_SUID (1 << 11)
335#define ATTR_KILL_SGID 4096 335#define ATTR_KILL_SGID (1 << 12)
336#define ATTR_FILE 8192 336#define ATTR_FILE (1 << 13)
337#define ATTR_KILL_PRIV 16384 337#define ATTR_KILL_PRIV (1 << 14)
338#define ATTR_OPEN 32768 /* Truncating from open(O_TRUNC) */ 338#define ATTR_OPEN (1 << 15) /* Truncating from open(O_TRUNC) */
339#define ATTR_TIMES_SET (1 << 16)
339 340
340/* 341/*
341 * This is the Inode Attributes structure, used for notify_change(). It 342 * This is the Inode Attributes structure, used for notify_change(). It