Add futimens(2) and part of utimnsat(2)
This commit is contained in:
manu
parent
47d9241c1a
commit
5b61306f9b
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@ -1,4 +1,4 @@
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# $NetBSD: mi,v 1.1662 2011/08/15 15:14:00 wiz Exp $
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# $NetBSD: mi,v 1.1663 2011/08/17 07:22:34 manu Exp $
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#
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# Note: don't delete entries from here - mark them as "obsolete" instead.
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#
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@ -4680,6 +4680,7 @@
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./usr/share/man/cat2/fsync_range.0 comp-c-catman .cat
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./usr/share/man/cat2/ftruncate.0 comp-c-catman .cat
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./usr/share/man/cat2/futimes.0 comp-c-catman .cat
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./usr/share/man/cat2/futimens.0 comp-c-catman .cat
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./usr/share/man/cat2/getcontext.0 comp-c-catman .cat
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./usr/share/man/cat2/getdents.0 comp-c-catman .cat
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./usr/share/man/cat2/getdirentries.0 comp-obsolete obsolete
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@ -4865,6 +4866,7 @@
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./usr/share/man/cat2/undelete.0 comp-c-catman .cat
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./usr/share/man/cat2/unlink.0 comp-c-catman .cat
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./usr/share/man/cat2/unmount.0 comp-c-catman .cat
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./usr/share/man/cat2/utimensat.0 comp-c-catman .cat
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./usr/share/man/cat2/utimes.0 comp-c-catman .cat
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./usr/share/man/cat2/utrace.0 comp-c-catman .cat
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./usr/share/man/cat2/uuidgen.0 comp-c-catman .cat
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@ -10864,6 +10866,7 @@
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./usr/share/man/html2/fsync_range.html comp-c-htmlman html
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./usr/share/man/html2/ftruncate.html comp-c-htmlman html
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./usr/share/man/html2/futimes.html comp-c-htmlman html
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./usr/share/man/html2/futimens.html comp-c-htmlman html
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./usr/share/man/html2/getcontext.html comp-c-htmlman html
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./usr/share/man/html2/getdents.html comp-c-htmlman html
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./usr/share/man/html2/getegid.html comp-c-htmlman html
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@ -11037,6 +11040,7 @@
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./usr/share/man/html2/undelete.html comp-c-htmlman html
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./usr/share/man/html2/unlink.html comp-c-htmlman html
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./usr/share/man/html2/unmount.html comp-c-htmlman html
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./usr/share/man/html2/utimensat.html comp-c-htmlman html
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./usr/share/man/html2/utimes.html comp-c-htmlman html
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./usr/share/man/html2/utrace.html comp-c-htmlman html
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./usr/share/man/html2/uuidgen.html comp-c-htmlman html
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@ -16822,6 +16826,7 @@
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./usr/share/man/man2/fsync_range.2 comp-c-man .man
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./usr/share/man/man2/ftruncate.2 comp-c-man .man
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./usr/share/man/man2/futimes.2 comp-c-man .man
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./usr/share/man/man2/futimens.2 comp-c-man .man
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./usr/share/man/man2/getcontext.2 comp-c-man .man
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./usr/share/man/man2/getdents.2 comp-c-man .man
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./usr/share/man/man2/getegid.2 comp-c-man .man
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@ -17005,6 +17010,7 @@
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./usr/share/man/man2/undelete.2 comp-c-man .man
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./usr/share/man/man2/unlink.2 comp-c-man .man
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./usr/share/man/man2/unmount.2 comp-c-man .man
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./usr/share/man/man2/utimensat.2 comp-c-man .man
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./usr/share/man/man2/utimes.2 comp-c-man .man
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./usr/share/man/man2/utrace.2 comp-c-man .man
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./usr/share/man/man2/uuidgen.2 comp-c-man .man
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@ -1,4 +1,4 @@
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# $NetBSD: Makefile.inc,v 1.208 2011/08/08 12:08:53 manu Exp $
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# $NetBSD: Makefile.inc,v 1.209 2011/08/17 07:22:33 manu Exp $
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# @(#)Makefile.inc 8.3 (Berkeley) 10/24/94
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# sys sources
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@ -90,7 +90,7 @@ ASM= access.S acct.S \
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faccessat.S fchdir.S fchflags.S fchmod.S fchmodat.S fchown.S \
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fchownat.S fchroot.S fexecve.S __fhopen40.S __fhstat50.S \
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__fhstatvfs140.S fktrace.S flock.S fpathconf.S __fstat50.S \
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fstatvfs1.S fstatat.S __futimes50.S \
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fstatvfs1.S fstatat.S __futimes50.S futimens.S \
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__getcwd.S __getdents30.S __getfh30.S getvfsstat.S getgroups.S\
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__getitimer50.S __getlogin.S getpeername.S getpgid.S getpgrp.S \
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getpriority.S getrlimit.S __getrusage50.S getsid.S \
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@ -315,6 +315,7 @@ MLINKS+=statvfs.2 fstatvfs1.2
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MLINKS+=syscall.2 __syscall.2
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MLINKS+=truncate.2 ftruncate.2
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MLINKS+=utimes.2 futimes.2 utimes.2 lutimes.2
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MLINKS+=utimes.2 futimens.2 utimes.2 utimensat.2
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MLINKS+=wait.2 wait3.2 wait.2 wait4.2 wait.2 waitpid.2
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MLINKS+=write.2 writev.2 write.2 pwrite.2 write.2 pwritev.2
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MLINKS+=pipe.2 pipe2.2
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@ -1,4 +1,4 @@
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.\" $NetBSD: utimes.2,v 1.26 2010/04/29 17:02:38 jruoho Exp $
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.\" $NetBSD: utimes.2,v 1.27 2011/08/17 07:22:33 manu Exp $
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.\"
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.\" Copyright (c) 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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@ -35,7 +35,9 @@
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.Sh NAME
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.Nm utimes ,
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.Nm lutimes ,
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.Nm futimes
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.Nm futimes ,
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.Nm futimens ,
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.Nm utimensat
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.Nd set file access and modification times
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.Sh LIBRARY
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.Lb libc
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@ -47,6 +49,11 @@
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.Fn lutimes "const char *path" "const struct timeval times[2]"
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.Ft int
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.Fn futimes "int fd" "const struct timeval times[2]"
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.Ft int
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.Fn futimens "int fd" "const struct timespec times[2]"
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.Ft int
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.Fn utimensat "int fd" "const char *path" "const struct timespec times[2]" "\
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int flag"
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.Sh DESCRIPTION
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The access and modification times of the file named by
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.Fa path
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@ -93,15 +100,52 @@ changes the access and modification times of the link,
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while
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.Fn utimes
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changes the times of the file the link references.
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.Pp
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.Fn futimens
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is like
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.Fn futimes
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except that time is specified with nanosecond instead of microseconds.
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.Pp
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.Fn utimensat
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also allows time to be specifed with nanoseconds. When it operates on
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a symbolic link, it will change the target's time if
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.Ar follow
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is unset.
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If
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.Ar follow
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is set to
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.Dv AT_SYMLINK_NOFOLLOW ,
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the symbolic link's dates are changed.
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.Pp
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The nanosecond fields for
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.Fn futimes
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and
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.Fn utimensat
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can be set to the special value
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.Dv UTIME_NOW
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to set the current time, or to
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.Dv UTIME_OMIT
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to let the time unchanged (this allows changing access time but not
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modification time, and vice-versa).
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.Pp
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.Fn utimensat
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is partially implemented.
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It will return
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.Er ENOSYS
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for
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.Fa fd
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values different than
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.Dv AT_FDCWD .
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.Sh RETURN VALUES
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Upon successful completion, a value of 0 is returned.
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Otherwise, a value of \-1 is returned and
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.Va errno
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is set to indicate the error.
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.Sh ERRORS
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.Fn utimes
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.Fn utimes ,
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.Fn lutimes ,
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and
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.Fn lutimes
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.Fn utimensat
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will fail if:
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.Bl -tag -width Er
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.It Bq Er EACCES
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@ -144,6 +188,8 @@ The file system containing the file is mounted read-only.
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.El
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.Pp
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.Fn futimes
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and
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.Fn futimens
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will fail if:
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.Bl -tag -width Er
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.It Bq Er EACCES
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@ -184,6 +230,11 @@ function conforms to
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It was however marked as legacy in the
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.St -p1003.1-2004
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revision.
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.Fn futimens
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and
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.Fn utmensat
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functions conform to
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.St -p1003.1-2008 .
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.Sh HISTORY
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The
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.Fn utimes
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@ -199,3 +250,11 @@ function call appeared in
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.Nx 1.3 .
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Birthtime setting support was added in
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.Nx 5.0 .
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.Fn futimens
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and
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.Fn utimensat
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functions calls appreared in
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.Nx 6.0
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.Sh BUGS
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.Fn utimensat
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is partially implemented.
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@ -1,4 +1,4 @@
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$NetBSD: syscalls.master,v 1.251 2011/08/08 12:08:53 manu Exp $
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$NetBSD: syscalls.master,v 1.252 2011/08/17 07:22:34 manu Exp $
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; @(#)syscalls.master 8.2 (Berkeley) 1/13/94
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@ -923,3 +923,5 @@
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const char *path2); }
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471 STD RUMP { int|sys||unlinkat(int fd, const char *path, \
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int flag); }
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472 STD RUMP { int|sys||futimens(int fd, \
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const struct timespec *tptr); }
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@ -1,4 +1,4 @@
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/* $NetBSD: vfs_syscalls.c,v 1.433 2011/08/08 12:08:53 manu Exp $ */
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/* $NetBSD: vfs_syscalls.c,v 1.434 2011/08/17 07:22:34 manu Exp $ */
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/*-
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* Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
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@ -70,7 +70,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.433 2011/08/08 12:08:53 manu Exp $");
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__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.434 2011/08/17 07:22:34 manu Exp $");
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#ifdef _KERNEL_OPT
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#include "opt_fileassoc.h"
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@ -3031,6 +3031,26 @@ sys___futimes50(struct lwp *l, const struct sys___futimes50_args *uap,
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return (error);
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}
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int
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sys_futimens(struct lwp *l, const struct sys_futimens_args *uap,
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register_t *retval)
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{
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/* {
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syscallarg(int) fd;
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syscallarg(const struct timespec *) tptr;
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} */
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int error;
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file_t *fp;
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/* fd_getvnode() will use the descriptor for us */
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if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0)
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return (error);
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error = do_sys_utimens(l, fp->f_data, NULL, 0, SCARG(uap, tptr),
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UIO_USERSPACE);
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fd_putfile(SCARG(uap, fd));
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return (error);
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}
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/*
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* Set the access and modification times given a path name; this
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* version does not follow links.
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@ -3058,6 +3078,20 @@ sys_utimensat(struct lwp *l, const struct sys_utimensat_args *uap,
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syscallarg(const struct timespec *) tptr;
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syscallarg(int) flag;
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} */
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int follow;
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const struct timespec *tptr;
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/*
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* Specified fd is not yet implemented
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*/
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if (SCARG(uap, fd) != AT_FDCWD)
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return ENOSYS;
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tptr = SCARG(uap, tptr);
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follow = (SCARG(uap, flag) & AT_SYMLINK_NOFOLLOW) ? NOFOLLOW : FOLLOW;
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return do_sys_utimens(l, NULL, SCARG(uap, path), follow,
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tptr, UIO_USERSPACE);
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return ENOSYS;
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}
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@ -3066,8 +3100,8 @@ sys_utimensat(struct lwp *l, const struct sys_utimensat_args *uap,
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* Common routine to set access and modification times given a vnode.
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*/
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int
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do_sys_utimes(struct lwp *l, struct vnode *vp, const char *path, int flag,
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const struct timeval *tptr, enum uio_seg seg)
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do_sys_utimens(struct lwp *l, struct vnode *vp, const char *path, int flag,
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const struct timespec *tptr, enum uio_seg seg)
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{
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struct vattr vattr;
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int error, dorele = 0;
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@ -3092,19 +3126,20 @@ do_sys_utimes(struct lwp *l, struct vnode *vp, const char *path, int flag,
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nanotime(&ts[0]);
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ts[1] = ts[0];
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} else {
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struct timeval tv[2];
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vanull = false;
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if (seg != UIO_SYSSPACE) {
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error = copyin(tptr, tv, sizeof (tv));
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error = copyin(tptr, ts, sizeof (ts));
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if (error != 0)
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return error;
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tptr = tv;
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}
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TIMEVAL_TO_TIMESPEC(&tptr[0], &ts[0]);
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TIMEVAL_TO_TIMESPEC(&tptr[1], &ts[1]);
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}
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if (ts[0].tv_nsec == UTIME_NOW)
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nanotime(&ts[0]);
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if (ts[1].tv_nsec == UTIME_NOW)
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nanotime(&ts[1]);
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if (vp == NULL) {
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/* note: SEG describes TPTR, not PATH; PATH is always user */
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error = namei_simple_user(path, sflags, &vp);
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@ -3117,10 +3152,16 @@ do_sys_utimes(struct lwp *l, struct vnode *vp, const char *path, int flag,
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setbirthtime = (VOP_GETATTR(vp, &vattr, l->l_cred) == 0 &&
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timespeccmp(&ts[1], &vattr.va_birthtime, <));
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vattr_null(&vattr);
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vattr.va_atime = ts[0];
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vattr.va_mtime = ts[1];
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if (setbirthtime)
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vattr.va_birthtime = ts[1];
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if (ts[0].tv_nsec != UTIME_OMIT)
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vattr.va_atime = ts[0];
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if (ts[1].tv_nsec != UTIME_OMIT) {
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vattr.va_mtime = ts[1];
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if (setbirthtime)
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vattr.va_birthtime = ts[1];
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}
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if (vanull)
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vattr.va_vaflags |= VA_UTIMES_NULL;
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error = VOP_SETATTR(vp, &vattr, l->l_cred);
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@ -3132,6 +3173,42 @@ do_sys_utimes(struct lwp *l, struct vnode *vp, const char *path, int flag,
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return error;
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}
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int
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do_sys_utimes(struct lwp *l, struct vnode *vp, const char *path, int flag,
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const struct timeval *tptr, enum uio_seg seg)
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{
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struct timespec ts[2];
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struct timespec *tsptr = NULL;
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int error;
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if (tptr != NULL) {
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struct timeval tv[2];
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if (seg != UIO_SYSSPACE) {
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error = copyin(tptr, tv, sizeof (tv));
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if (error != 0)
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return error;
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tptr = tv;
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}
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if ((tv[0].tv_usec == UTIME_NOW) ||
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(tv[0].tv_usec == UTIME_OMIT))
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ts[0].tv_nsec = tv[0].tv_usec;
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else
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TIMEVAL_TO_TIMESPEC(&tptr[0], &ts[0]);
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if ((tv[1].tv_usec == UTIME_NOW) ||
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(tv[1].tv_usec == UTIME_OMIT))
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ts[1].tv_nsec = tv[1].tv_usec;
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else
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TIMEVAL_TO_TIMESPEC(&tptr[1], &ts[1]);
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tsptr = &ts[0];
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}
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return do_sys_utimens(l, vp, path, flag, tsptr, UIO_SYSSPACE);
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}
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/*
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* Truncate a file given its path name.
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*/
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