utimes.c (3a20ac2c52b1317f5a5f0bd9cd3cbe8495ddd026) utimes.c (c7887325230aec47d47a32562a6e26014a0fafca)
1#include <linux/compiler.h>
2#include <linux/file.h>
3#include <linux/fs.h>
4#include <linux/linkage.h>
5#include <linux/mount.h>
6#include <linux/namei.h>
7#include <linux/sched.h>
8#include <linux/stat.h>

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121 * If filename is NULL and dfd refers to an open file, then operate on
122 * the file. Otherwise look up filename, possibly using dfd as a
123 * starting point.
124 *
125 * If times==NULL, set access and modification to current time,
126 * must be owner or have write permission.
127 * Else, update from *times, must be owner or super user.
128 */
1#include <linux/compiler.h>
2#include <linux/file.h>
3#include <linux/fs.h>
4#include <linux/linkage.h>
5#include <linux/mount.h>
6#include <linux/namei.h>
7#include <linux/sched.h>
8#include <linux/stat.h>

--- 112 unchanged lines hidden (view full) ---

121 * If filename is NULL and dfd refers to an open file, then operate on
122 * the file. Otherwise look up filename, possibly using dfd as a
123 * starting point.
124 *
125 * If times==NULL, set access and modification to current time,
126 * must be owner or have write permission.
127 * Else, update from *times, must be owner or super user.
128 */
129long do_utimes(int dfd, char __user *filename, struct timespec *times, int flags)
129long do_utimes(int dfd, const char __user *filename, struct timespec *times,
130 int flags)
130{
131 int error = -EINVAL;
132
133 if (times && (!nsec_valid(times[0].tv_nsec) ||
134 !nsec_valid(times[1].tv_nsec))) {
135 goto out;
136 }
137

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165 error = utimes_common(&path, times);
166 path_put(&path);
167 }
168
169out:
170 return error;
171}
172
131{
132 int error = -EINVAL;
133
134 if (times && (!nsec_valid(times[0].tv_nsec) ||
135 !nsec_valid(times[1].tv_nsec))) {
136 goto out;
137 }
138

--- 27 unchanged lines hidden (view full) ---

166 error = utimes_common(&path, times);
167 path_put(&path);
168 }
169
170out:
171 return error;
172}
173
173SYSCALL_DEFINE4(utimensat, int, dfd, char __user *, filename,
174SYSCALL_DEFINE4(utimensat, int, dfd, const char __user *, filename,
174 struct timespec __user *, utimes, int, flags)
175{
176 struct timespec tstimes[2];
177
178 if (utimes) {
179 if (copy_from_user(&tstimes, utimes, sizeof(tstimes)))
180 return -EFAULT;
181
182 /* Nothing to do, we must not even check the path. */
183 if (tstimes[0].tv_nsec == UTIME_OMIT &&
184 tstimes[1].tv_nsec == UTIME_OMIT)
185 return 0;
186 }
187
188 return do_utimes(dfd, filename, utimes ? tstimes : NULL, flags);
189}
190
175 struct timespec __user *, utimes, int, flags)
176{
177 struct timespec tstimes[2];
178
179 if (utimes) {
180 if (copy_from_user(&tstimes, utimes, sizeof(tstimes)))
181 return -EFAULT;
182
183 /* Nothing to do, we must not even check the path. */
184 if (tstimes[0].tv_nsec == UTIME_OMIT &&
185 tstimes[1].tv_nsec == UTIME_OMIT)
186 return 0;
187 }
188
189 return do_utimes(dfd, filename, utimes ? tstimes : NULL, flags);
190}
191
191SYSCALL_DEFINE3(futimesat, int, dfd, char __user *, filename,
192SYSCALL_DEFINE3(futimesat, int, dfd, const char __user *, filename,
192 struct timeval __user *, utimes)
193{
194 struct timeval times[2];
195 struct timespec tstimes[2];
196
197 if (utimes) {
198 if (copy_from_user(&times, utimes, sizeof(times)))
199 return -EFAULT;

--- 24 unchanged lines hidden --- 		193 struct timeval __user *, utimes)
194{
195 struct timeval times[2];
196 struct timespec tstimes[2];
197
198 if (utimes) {
199 if (copy_from_user(&times, utimes, sizeof(times)))
200 return -EFAULT;

--- 24 unchanged lines hidden ---