Rev 4937: Initial implementation of the linux version. in http://bazaar.launchpad.net/~jameinel/bzr/2.1.0rc1-set-mtime

[John Arbash Meinel]

At http://bazaar.launchpad.net/~jameinel/bzr/2.1.0rc1-set-mtime

------------------------------------------------------------
revno: 4937
revision-id: john at arbash-meinel.com-20100105212855-xgsy8aziw1ag9377
parent: john at arbash-meinel.com-20100105211522-s3vpbckrs9uvt11u
committer: John Arbash Meinel <john at arbash-meinel.com>
branch nick: 2.1.0rc1-set-mtime
timestamp: Tue 2010-01-05 15:28:55 -0600
message:
  Initial implementation of the linux version.
-------------- next part --------------
=== modified file 'bzrlib/_readdir_pyx.pyx'
--- a/bzrlib/_readdir_pyx.pyx	2009-12-23 02:19:04 +0000
+++ b/bzrlib/_readdir_pyx.pyx	2010-01-05 21:28:55 +0000
@@ -62,6 +62,7 @@
         ino_t st_ino
         int st_mtime
         int st_ctime
+    int fstat(int fd, stat *buf)
     int lstat(char *path, stat *buf)
     int S_ISDIR(int mode)
     int S_ISCHR(int mode)
@@ -77,6 +78,14 @@
     int open(char *pathname, int flags, mode_t mode)
 
 
+cdef extern from "sys/time.h":
+    struct timeval:
+        long tv_sec
+        long tv_usec
+    # atime, mtime
+    int futimes(int fd, timeval tv[2])
+
+
 cdef extern from 'Python.h':
     int PyErr_CheckSignals() except -1
     char * PyString_AS_STRING(object)
@@ -380,4 +389,25 @@
     return result
 
 
+def fset_mtime(fileno, mtime):
+    """See osutils.fset_mtime."""
+    cdef int fd
+    cdef int retval
+    cdef double d_mtime
+    cdef timeval tv[2]
+    cdef stat st
+
+    fd = fileno
+    d_mtime = mtime
+    tv[1].tv_sec = <int>(d_mtime)
+    tv[1].tv_usec = <int>((d_mtime - tv[1].tv_sec) * 1000000.0)
+    retval = fstat(fd, &st)
+    if retval != 0:
+        raise OSError('Failed to fstat()')
+    tv[0].tv_sec = st.st_atime
+    tv[0].tv_usec = 0
+    retval = futimes(fd, tv)
+    if retval != 0:
+        raise OSError('Failed to futimes()')
+
 # vim: tw=79 ai expandtab sw=4 sts=4