diff options
Diffstat (limited to 'nx-X11/extras/fontconfig/src/fcatomic.c')
| -rw-r--r-- | nx-X11/extras/fontconfig/src/fcatomic.c | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/nx-X11/extras/fontconfig/src/fcatomic.c b/nx-X11/extras/fontconfig/src/fcatomic.c deleted file mode 100644 index a8487f33f..000000000 --- a/nx-X11/extras/fontconfig/src/fcatomic.c +++ /dev/null @@ -1,210 +0,0 @@ -/* - * $RCSId: xc/lib/fontconfig/src/fcatomic.c,v 1.2 2002/03/04 21:15:28 tsi Exp $ - * - * Copyright © 2002 Keith Packard - * - * Permission to use, copy, modify, distribute, and sell this software and its - * documentation for any purpose is hereby granted without fee, provided that - * the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation, and that the name of Keith Packard not be used in - * advertising or publicity pertaining to distribution of the software without - * specific, written prior permission. Keith Packard makes no - * representations about the suitability of this software for any purpose. It - * is provided "as is" without express or implied warranty. - * - * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, - * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO - * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, 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. - */ - -/* - * fcatomic.c - * - * Lock cache and configuration files for atomic update - * - * Uses only regular filesystem calls so it should - * work even in the absense of functioning file locking - * - * On Unix, four files are used: - * file - the data file accessed by other apps. - * new - a new version of the data file while it's being written - * lck - the lock file - * tmp - a temporary file made unique with mkstemp - * - * Here's how it works: - * Create 'tmp' and store our PID in it - * Attempt to link it to 'lck' - * Unlink 'tmp' - * If the link succeeded, the lock is held - * - * On Windows, where there are no links, no tmp file is used, and lck - * is a directory that's mkdir'ed. If the mkdir succeeds, the lock is - * held. - */ - -#include "fcint.h" -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <unistd.h> -#include <stdlib.h> -#include <time.h> - -#ifdef _WIN32 -#define mkdir(path,mode) _mkdir(path) -#endif - -#define NEW_NAME ".NEW" -#define LCK_NAME ".LCK" -#define TMP_NAME ".TMP-XXXXXX" - -FcAtomic * -FcAtomicCreate (const FcChar8 *file) -{ - int file_len = strlen ((char *) file); - int new_len = file_len + sizeof (NEW_NAME); - int lck_len = file_len + sizeof (LCK_NAME); - int tmp_len = file_len + sizeof (TMP_NAME); - int total_len = (sizeof (FcAtomic) + - file_len + 1 + - new_len + 1 + - lck_len + 1 + - tmp_len + 1); - FcAtomic *atomic = malloc (total_len); - if (!atomic) - return 0; - FcMemAlloc (FC_MEM_ATOMIC, total_len); - - atomic->file = (FcChar8 *) (atomic + 1); - strcpy ((char *) atomic->file, (char *) file); - - atomic->new = atomic->file + file_len + 1; - strcpy ((char *) atomic->new, (char *) file); - strcat ((char *) atomic->new, NEW_NAME); - - atomic->lck = atomic->new + new_len + 1; - strcpy ((char *) atomic->lck, (char *) file); - strcat ((char *) atomic->lck, LCK_NAME); - - atomic->tmp = atomic->lck + lck_len + 1; - - return atomic; -} - -FcBool -FcAtomicLock (FcAtomic *atomic) -{ - int fd = -1; - FILE *f = 0; - int ret; - struct stat lck_stat; - -#ifdef HAVE_LINK - strcpy ((char *) atomic->tmp, (char *) atomic->file); - strcat ((char *) atomic->tmp, TMP_NAME); - fd = mkstemp ((char *) atomic->tmp); - if (fd < 0) - return FcFalse; - f = fdopen (fd, "w"); - if (!f) - { - close (fd); - unlink ((char *) atomic->tmp); - return FcFalse; - } - ret = fprintf (f, "%ld\n", (long)getpid()); - if (ret <= 0) - { - fclose (f); - unlink ((char *) atomic->tmp); - return FcFalse; - } - if (fclose (f) == EOF) - { - unlink ((char *) atomic->tmp); - return FcFalse; - } - ret = link ((char *) atomic->tmp, (char *) atomic->lck); - (void) unlink ((char *) atomic->tmp); -#else - ret = mkdir ((char *) atomic->lck, 0600); -#endif - if (ret < 0) - { - /* - * If the file is around and old (> 10 minutes), - * assume the lock is stale. This assumes that any - * machines sharing the same filesystem will have clocks - * reasonably close to each other. - */ - if (stat ((char *) atomic->lck, &lck_stat) >= 0) - { - time_t now = time (0); - if ((long int) (now - lck_stat.st_mtime) > 10 * 60) - { -#ifdef HAVE_LINK - if (unlink ((char *) atomic->lck) == 0) - return FcAtomicLock (atomic); -#else - if (rmdir ((char *) atomic->lck) == 0) - return FcAtomicLock (atomic); -#endif - } - } - return FcFalse; - } - (void) unlink ((char *) atomic->new); - return FcTrue; -} - -FcChar8 * -FcAtomicNewFile (FcAtomic *atomic) -{ - return atomic->new; -} - -FcChar8 * -FcAtomicOrigFile (FcAtomic *atomic) -{ - return atomic->file; -} - -FcBool -FcAtomicReplaceOrig (FcAtomic *atomic) -{ - if (rename ((char *) atomic->new, (char *) atomic->file) < 0) - return FcFalse; - return FcTrue; -} - -void -FcAtomicDeleteNew (FcAtomic *atomic) -{ - unlink ((char *) atomic->new); -} - -void -FcAtomicUnlock (FcAtomic *atomic) -{ -#ifdef HAVE_LINK - unlink ((char *) atomic->lck); -#else - rmdir ((char *) atomic->lck); -#endif -} - -void -FcAtomicDestroy (FcAtomic *atomic) -{ - FcMemFree (FC_MEM_ATOMIC, sizeof (FcAtomic) + - strlen ((char *) atomic->file) * 4 + 1 + - sizeof (NEW_NAME) + sizeof (LCK_NAME) + - sizeof (TMP_NAME)); - - free (atomic); -} |