1 files changed, 0 insertions, 143 deletions
diff --git a/libical/src/libical/locking.c b/libical/src/libical/locking.c
deleted file mode 100644
index 0376bc2bec..0000000000
--- a/libical/src/libical/locking.c
+++ /dev/null
@@ -1,143 +0,0 @@
-
-/*
-  I Stole this from:
-  http://www.cis.temple.edu/~ingargio/old/cis307s96/readings/rwlockexample.html
-
-  CIS 307: An example using Read/Write File Locks
-  [fcntl.h], [fcntl.c], [fcntlmain.c]
-
-In Stevens "Advanced Programming in the Unix Environment" we see ways to use
-the Unix service fcntl to lock portions of a file for reading and writing in
-the manner stated in the Reader and Writer problem [any number of readers at
-a time, but writers must operate alone]. Here we have three files that adapt
-and use the code from Stevens:
-
-*fcntl.h: Specification of the locking functions.
-*fcntl.c: Implementation of the locking functions.
-*fcntlmain.c: Driver that does a simple test of the locking functions.
-
-WARNING: A file lock request which is blocked can be interrupted by a
-signal. In this case the lock operation returns EINTR. Thus we may think we
-got a lock when we really don't. A solution is to block signals when
-locking. Another solution is to test the value returned by the lock
-operation and relock if the value is EINTR. Another solution, which we adopt
-here, is to do nothing about it.
-
-/* fcntl.c  -- Defines mutexes in terms of read/write locks on files.
- *             (code is mostly from Stevens: Advanced Programming in the
- *             Unix environment. See from page 367 on.
- *             filerwlock, filerwlockCreate, filerwlockDelete,
- *             filerwreadlock, filerwlongreadlock, filerwlongunlock,
- *             filerwlockUnlock
- */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-int lock_reg(int, int, int, off_t, int, off_t);
-
-#define read_lock(fd, offset, whence, len) \
-                        lock_reg(fd, F_SETLK, F_RDLCK, offset, whence, len)
-
-#define readw_lock(fd, offset, whence, len) \
-                        lock_reg(fd, F_SETLKW, F_RDLCK, offset, whence, len)
-
-#define write_lock(fd, offset, whence, len) \
-                        lock_reg(fd, F_SETLK, F_WRLCK, offset, whence, len)
-
-#define writew_lock(fd, offset, whence, len) \
-                        lock_reg(fd, F_SETLKW, F_WRLCK, offset, whence, len)
-
-#define un_lock(fd, offset, whence, len) \
-                        lock_reg(fd, F_SETLK, F_UNLCK, offset, whence, len)
-
-pid_t   lock_test(int, int , off_t , int , off_t );
-
-#define is_readlock(fd, offset, whence, len) \
-                        lock_test(fd, F_RDLCK, offset, whence, len)
-
-#define is_writelock(fd, offset, whence, len) \
-                        lock_test(fd, F_WRLCK, offset, whence, len)
-
-int lock_reg(int fd, int cmd, int type, off_t offset, int whence, off_t len)
-{
-  struct flock lock;
-  lock.l_type = type;     /* F_RDLCK, F_WRLCK, F_UNLCK */
-  lock.l_start = offset;  /* byte offset relative to l_whence */
-  lock.l_whence = whence; /* SEEK_SET, SEEK_CUR, SEEK_END */
-  lock.l_len = len;       /* #bytes (0 means to EOF) */
-  return (fcntl(fd, cmd, &lock));
-}
-
-pid_t   lock_test(int fd, int type, off_t offset, int whence, off_t len)
-{
-  struct flock lock;
-  lock.l_type = type;     /* F_RDLCK or F_WRLCK */
-  lock.l_start = offset;  /* byte offset relative to l_whence */
-  lock.l_whence = whence; /* SEEK_SET, SEEK_CUR, SEEK_END */
-  lock.l_len = len;       /* #bytes (0 means to EOF) */
-  if (fcntl(fd,F_GETLK,&lock) < 0){
-    perror("fcntl"); exit(1);}
-  if (lock.l_type == F_UNLCK)
-    return (0);        /* false, region is not locked by another process */
-  return (lock.l_pid); /* true, return pid of lock owner */
-}
-
-typedef struct {
-    int fd;
-    int n;} filerwlock;
-
-/* Create N read/write locks and returns the id of this cluster of locks. */
-filerwlock * filerwlockCreate(char *filename, int n) {
-   filerwlock *fl = (filerwlock *)malloc(sizeof(filerwlock));
-   if (((fl->fd) = open(filename, O_RDWR | O_CREAT | O_TRUNC, S_IWUSR)) < 0) {
-      perror("open");
-      exit(1);}
-   fl->n = n;
-   return fl;
- }
-
-/* Delete the cluster of read/write locks associated with fl. */
-int filerwlockDelete(filerwlock *fl) {
-   if (close(fl->fd) < 0) {
-     perror("close");
-     exit(1);}
-   return free(fl);
- }
-
-/* Given the read/write lock cluster fl, lock its ith element */
-int filerwreadlock(filerwlock *fl, int i) {
-   if ((i < 0) | (i >= fl->n)) {
-     printf("filerwlockLock needs i in range 0 .. %d\n", (fl->n)-1);
-     exit(0);}
-   readw_lock(fl->fd, i, SEEK_SET, 1);
- }
-
-int filerwwritelock(filerwlock *fl, int i) {
-   if ((i < 0) | (i >= fl->n)) {
-     printf("filerwlockLock needs i in range 0 .. %d\n", (fl->n)-1);
-     exit(0);}
-   writew_lock(fl->fd, i, SEEK_SET, 1);
- }
-
-/* Given the lock cluster fl, unlock its ith element */
-int filerwunlock(filerwlock *fl, int i){
-
-   if ((i < 0) | (i >= fl->n)) {
-     printf("filerwlockUnlock needs i in range 0 .. %d\n", (fl->n)-1);
-     exit(0);}
-   un_lock(fl->fd, i, SEEK_SET, 1);
- }
-
-/* Given the lock cluster fl, it read locks all its elements */
-int filerwlongreadlock(filerwlock *fl) {
-  readw_lock(fl->fd, 0, SEEK_SET, fl->n);
-}
-
-/* Given the lock cluster fl, it unlocks all its elements */
-int filerwlongunlock(filerwlock *fl) {
-  un_lock(fl->fd, 0, SEEK_SET, fl->n);
-}
-