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/*
* Copyright (c) 1989 Mark Davies
* Copyright (c) 1990 Andy Linton
* Copyright (c) 1990 Victoria University of Wellington.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted provided
* that: (1) source distributions retain this entire copyright notice and
* comment, and (2) distributions including binaries display the following
* acknowledgement: ``This product includes software developed by the
* Victoria University of Wellington, New Zealand and its contributors''
* in the documentation or other materials provided with the distribution
* and in all advertising materials mentioning features or use of this
* software.
* Neither the name of the University nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#if defined(SOLARIS2) || defined(AIX)
#define SYSV
#endif
#ifdef SYSV
#include <unistd.h>
#include <sys/types.h>
#include <errno.h>
#include "flock.h" /* defines normally in <sys/file.h> */
#if defined(F_SETLK) && defined(F_SETLKW)
flock(fd, operation)
int fd, operation;
{
int op, ret;
struct flock arg;
extern int errno;
op = (LOCK_NB & operation) ? F_SETLK : F_SETLKW;
arg.l_type = (LOCK_EX & operation) ? F_WRLCK :
(LOCK_SH & operation) ? F_RDLCK : F_UNLCK;
arg.l_whence = 0;
arg.l_start = 0;
arg.l_len = 0;
arg.l_pid = 0;
if ((ret = fcntl(fd, op, &arg)) == -1) {
if (errno == EACCES || errno == EAGAIN)
errno = EWOULDBLOCK;
}
return (ret);
}
#else
flock(fd, operation)
int fd, operation;
{
int op, ret;
extern int errno;
op = (LOCK_UN & operation) ? F_ULOCK :
(LOCK_NB & operation) ? F_TLOCK : F_LOCK;
if ((ret = lockf(fd, op, 0)) == -1) {
if (errno == EACCES || errno == EAGAIN)
errno = EWOULDBLOCK;
}
return (ret);
}
#endif /* F_SETLK && F_SETLKW */
#endif /* SYSV */
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.