futimes, lutimes - change file timestamps


   #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:
       Glibc 2.19 and earlier:


   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.


   On  success,  zero is returned.  On error, -1 is returned, and errno is
   set appropriately.


   Errors  are  as  for  utimes(2),  with  the  following  additions   for

   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


   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.


   For  an  explanation  of  the  terms  used   in   this   section,   see

   Interface             Attribute      Value   
   futimes(), lutimes()  Thread safety  MT-Safe 


   These  functions  are not specified in any standard.  Other than Linux,
   they are available only on the BSDs.


   utime(2), utimensat(2), symlink(7)


   This page is part of release 4.09 of the Linux  man-pages  project.   A
   description  of  the project, information about reporting bugs, and the
   latest    version    of    this    page,    can     be     found     at

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