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authorAl Viro <viro@zeniv.linux.org.uk>2017-04-08 18:04:59 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2017-04-17 12:52:23 -0400
commit1a060ba3c862bfc03e35112ff3a1434acb6de8e8 (patch)
treeeebeddf9798ddf6887bf4418414d21209521dc8a /fs/utimes.c
parente99ca56ce03dd90991025878152bae8b53484147 (diff)
utimes: move compat syscalls from compat.c
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/utimes.c')
-rw-r--r--fs/utimes.c66
1 files changed, 61 insertions, 5 deletions
diff --git a/fs/utimes.c b/fs/utimes.c
index 32b15b3f6629..6571d8c848a0 100644
--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -1,14 +1,10 @@
-#include <linux/compiler.h>
#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/linkage.h>
#include <linux/mount.h>
#include <linux/namei.h>
-#include <linux/sched.h>
-#include <linux/stat.h>
#include <linux/utime.h>
#include <linux/syscalls.h>
#include <linux/uaccess.h>
+#include <linux/compat.h>
#include <asm/unistd.h>
#ifdef __ARCH_WANT_SYS_UTIME
@@ -219,3 +215,63 @@ SYSCALL_DEFINE2(utimes, char __user *, filename,
{
return sys_futimesat(AT_FDCWD, filename, utimes);
}
+
+#ifdef CONFIG_COMPAT
+/*
+ * Not all architectures have sys_utime, so implement this in terms
+ * of sys_utimes.
+ */
+COMPAT_SYSCALL_DEFINE2(utime, const char __user *, filename,
+ struct compat_utimbuf __user *, t)
+{
+ struct timespec tv[2];
+
+ if (t) {
+ if (get_user(tv[0].tv_sec, &t->actime) ||
+ get_user(tv[1].tv_sec, &t->modtime))
+ return -EFAULT;
+ tv[0].tv_nsec = 0;
+ tv[1].tv_nsec = 0;
+ }
+ return do_utimes(AT_FDCWD, filename, t ? tv : NULL, 0);
+}
+
+COMPAT_SYSCALL_DEFINE4(utimensat, unsigned int, dfd, const char __user *, filename, struct compat_timespec __user *, t, int, flags)
+{
+ struct timespec tv[2];
+
+ if (t) {
+ if (compat_get_timespec(&tv[0], &t[0]) ||
+ compat_get_timespec(&tv[1], &t[1]))
+ return -EFAULT;
+
+ if (tv[0].tv_nsec == UTIME_OMIT && tv[1].tv_nsec == UTIME_OMIT)
+ return 0;
+ }
+ return do_utimes(dfd, filename, t ? tv : NULL, flags);
+}
+
+COMPAT_SYSCALL_DEFINE3(futimesat, unsigned int, dfd, const char __user *, filename, struct compat_timeval __user *, t)
+{
+ struct timespec tv[2];
+
+ if (t) {
+ if (get_user(tv[0].tv_sec, &t[0].tv_sec) ||
+ get_user(tv[0].tv_nsec, &t[0].tv_usec) ||
+ get_user(tv[1].tv_sec, &t[1].tv_sec) ||
+ get_user(tv[1].tv_nsec, &t[1].tv_usec))
+ return -EFAULT;
+ if (tv[0].tv_nsec >= 1000000 || tv[0].tv_nsec < 0 ||
+ tv[1].tv_nsec >= 1000000 || tv[1].tv_nsec < 0)
+ return -EINVAL;
+ tv[0].tv_nsec *= 1000;
+ tv[1].tv_nsec *= 1000;
+ }
+ return do_utimes(dfd, filename, t ? tv : NULL, 0);
+}
+
+COMPAT_SYSCALL_DEFINE2(utimes, const char __user *, filename, struct compat_timeval __user *, t)
+{
+ return compat_sys_futimesat(AT_FDCWD, filename, t);
+}
+#endif