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/* $OpenBSD: repository.c,v 1.22 2009/03/26 22:54:37 joris Exp $ */
/*
* Copyright (c) 2006 Joris Vink <joris@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <pwd.h>
#include <string.h>
#include <unistd.h>
#include "cvs.h"
struct cvs_wklhead repo_locks;
void
cvs_repository_unlock(const char *repo)
{
char fpath[MAXPATHLEN];
cvs_log(LP_TRACE, "cvs_repository_unlock(%s)", repo);
(void)xsnprintf(fpath, sizeof(fpath), "%s/%s", repo, CVS_LOCK);
/* XXX - this ok? */
cvs_worklist_run(&repo_locks, cvs_worklist_unlink);
}
void
cvs_repository_lock(const char *repo, int wantlock)
{
int i;
uid_t myuid;
struct stat st;
char fpath[MAXPATHLEN];
struct passwd *pw;
if (cvs_noexec == 1 || cvs_readonlyfs == 1)
return;
cvs_log(LP_TRACE, "cvs_repository_lock(%s, %d)", repo, wantlock);
(void)xsnprintf(fpath, sizeof(fpath), "%s/%s", repo, CVS_LOCK);
myuid = getuid();
for (i = 0; i < CVS_LOCK_TRIES; i++) {
if (cvs_quit)
fatal("received signal %d", sig_received);
if (stat(fpath, &st) == -1)
break;
if (st.st_uid == myuid)
return;
if ((pw = getpwuid(st.st_uid)) == NULL)
fatal("cvs_repository_lock: %s", strerror(errno));
cvs_log(LP_NOTICE, "waiting for %s's lock in '%s'",
pw->pw_name, repo);
sleep(CVS_LOCK_SLEEP);
}
if (i == CVS_LOCK_TRIES)
fatal("maximum wait time for lock inside '%s' reached", repo);
if (wantlock == 0)
return;
if ((i = open(fpath, O_WRONLY|O_CREAT|O_TRUNC, 0755)) < 0) {
if (errno == EEXIST)
fatal("cvs_repository_lock: somebody beat us");
else
fatal("cvs_repository_lock: %s: %s",
fpath, strerror(errno));
}
(void)close(i);
cvs_worklist_add(fpath, &repo_locks);
}
void
cvs_repository_getdir(const char *dir, const char *wdir,
struct cvs_flisthead *fl, struct cvs_flisthead *dl, int flags)
{
int type;
DIR *dirp;
struct stat st;
struct dirent *dp;
char *s, fpath[MAXPATHLEN], rpath[MAXPATHLEN];
if ((dirp = opendir(dir)) == NULL)
fatal("cvs_repository_getdir: failed to open '%s'", dir);
while ((dp = readdir(dirp)) != NULL) {
if (!strcmp(dp->d_name, ".") ||
!strcmp(dp->d_name, "..") ||
!strcmp(dp->d_name, CVS_LOCK))
continue;
(void)xsnprintf(fpath, MAXPATHLEN, "%s/%s", wdir, dp->d_name);
(void)xsnprintf(rpath, MAXPATHLEN, "%s/%s", dir, dp->d_name);
if (!TAILQ_EMPTY(&checkout_ign_pats)) {
if ((s = strrchr(fpath, ',')) != NULL)
*s = '\0';
if (cvs_file_chkign(fpath))
continue;
if (s != NULL)
*s = ',';
}
/*
* nfs and afs will show d_type as DT_UNKNOWN
* for files and/or directories so when we encounter
* this we call lstat() on the path to be sure.
*/
if (dp->d_type == DT_UNKNOWN) {
if (lstat(rpath, &st) == -1)
fatal("'%s': %s", rpath, strerror(errno));
switch (st.st_mode & S_IFMT) {
case S_IFDIR:
type = CVS_DIR;
break;
case S_IFREG:
type = CVS_FILE;
break;
default:
fatal("Unknown file type in repository");
}
} else {
switch (dp->d_type) {
case DT_DIR:
type = CVS_DIR;
break;
case DT_REG:
type = CVS_FILE;
break;
default:
fatal("Unknown file type in repository");
}
}
if (!(flags & REPOSITORY_DODIRS) && type == CVS_DIR) {
if (strcmp(dp->d_name, CVS_PATH_ATTIC))
continue;
}
switch (type) {
case CVS_DIR:
if (!strcmp(dp->d_name, CVS_PATH_ATTIC)) {
cvs_repository_getdir(rpath, wdir, fl, dl,
REPOSITORY_IS_ATTIC);
} else {
cvs_file_get(fpath, 0, dl, CVS_DIR);
}
break;
case CVS_FILE:
if ((s = strrchr(fpath, ',')) != NULL &&
s != fpath && !strcmp(s, RCS_FILE_EXT)) {
*s = '\0';
cvs_file_get(fpath,
(flags & REPOSITORY_IS_ATTIC) ?
FILE_INSIDE_ATTIC : 0, fl, CVS_FILE);
}
break;
default:
fatal("type %d unknown, shouldn't happen", type);
}
}
(void)closedir(dirp);
}
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