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Move rmtree() from libpgport to libpgcommon

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It requires pgfnames() from libpgcommon.
This commit is contained in:
Peter Eisentraut
2013-10-19 10:20:51 -04:00
parent ba7c5975ad
commit 2e6bc4b806
5 changed files with 134 additions and 113 deletions
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110
src/port/dirmod.c
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@ -351,116 +351,6 @@ pgwin32_is_junction(char *path)
#endif /* defined(WIN32) && !defined(__CYGWIN__) */
/*
* rmtree
*
* Delete a directory tree recursively.
* Assumes path points to a valid directory.
* Deletes everything under path.
* If rmtopdir is true deletes the directory too.
* Returns true if successful, false if there was any problem.
* (The details of the problem are reported already, so caller
* doesn't really have to say anything more, but most do.)
*/
bool
rmtree(const char *path, bool rmtopdir)
{
bool result = true;
char pathbuf[MAXPGPATH];
char **filenames;
char **filename;
struct stat statbuf;
/*
* we copy all the names out of the directory before we start modifying
* it.
*/
filenames = pgfnames(path);
if (filenames == NULL)
return false;
/* now we have the names we can start removing things */
for (filename = filenames; *filename; filename++)
{
snprintf(pathbuf, MAXPGPATH, "%s/%s", path, *filename);
/*
* It's ok if the file is not there anymore; we were just about to
* delete it anyway.
*
* This is not an academic possibility. One scenario where this
* happens is when bgwriter has a pending unlink request for a file in
* a database that's being dropped. In dropdb(), we call
* ForgetDatabaseFsyncRequests() to flush out any such pending unlink
* requests, but because that's asynchronous, it's not guaranteed that
* the bgwriter receives the message in time.
*/
if (lstat(pathbuf, &statbuf) != 0)
{
if (errno != ENOENT)
{
#ifndef FRONTEND
elog(WARNING, "could not stat file or directory \"%s\": %m",
pathbuf);
#else
fprintf(stderr, _("could not stat file or directory \"%s\": %s\n"),
pathbuf, strerror(errno));
#endif
result = false;
}
continue;
}
if (S_ISDIR(statbuf.st_mode))
{
/* call ourselves recursively for a directory */
if (!rmtree(pathbuf, true))
{
/* we already reported the error */
result = false;
}
}
else
{
if (unlink(pathbuf) != 0)
{
if (errno != ENOENT)
{
#ifndef FRONTEND
elog(WARNING, "could not remove file or directory \"%s\": %m",
pathbuf);
#else
fprintf(stderr, _("could not remove file or directory \"%s\": %s\n"),
pathbuf, strerror(errno));
#endif
result = false;
}
}
}
}
if (rmtopdir)
{
if (rmdir(path) != 0)
{
#ifndef FRONTEND
elog(WARNING, "could not remove file or directory \"%s\": %m",
path);
#else
fprintf(stderr, _("could not remove file or directory \"%s\": %s\n"),
path, strerror(errno));
#endif
result = false;
}
}
pgfnames_cleanup(filenames);
return result;
}
#if defined(WIN32) && !defined(__CYGWIN__)
#undef stat