изменить временные метки файла (change file timestamps)
Имя (Name)
futimes, lutimes - change file timestamps
Синопсис (Synopsis)
#include <sys/time.h>
int futimes(int fd, const struct timeval tv[2]);
int lutimes(const char *filename, const struct timeval tv[2]);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
futimes(), lutimes():
Since glibc 2.19:
_DEFAULT_SOURCE
Glibc 2.19 and earlier:
_BSD_SOURCE
Описание (Description)
futimes() changes the access and modification times of a file in
the same way as utimes(2), with the difference that the file
whose timestamps are to be changed is specified via a file
descriptor, fd, rather than via a pathname.
lutimes() changes the access and modification times of a file in
the same way as utimes(2), with the difference that if filename
refers to a symbolic link, then the link is not dereferenced:
instead, the timestamps of the symbolic link are changed.
Возвращаемое значение (Return value)
On success, zero is returned. On error, -1 is returned, and
errno is set to indicate the error.
Ошибки (Error)
Errors are as for utimes(2), with the following additions for
futimes():
EBADF fd is not a valid file descriptor.
ENOSYS The /proc filesystem could not be accessed.
The following additional error may occur for lutimes():
ENOSYS The kernel does not support this call; Linux 2.6.22 or
later is required.
Версии (Versions)
futimes() is available since glibc 2.3. lutimes() is available
since glibc 2.6, and is implemented using the utimensat(2) system
call, which is supported since kernel 2.6.22.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│futimes(), lutimes() │ Thread safety │ MT-Safe │
└──────────────────────────────────────┴───────────────┴─────────┘
Стандарты (Conforming to)
These functions are not specified in any standard. Other than
Linux, they are available only on the BSDs.
Смотри также (See also)
utime(2), utimensat(2), symlink(7)
