sudo 1.6, now with a BSD license

1 files changed, 149 insertions, 0 deletions

diff --git a/usr.bin/sudo/fileops.c b/usr.bin/sudo/fileops.c
new file mode 100644
index 00000000000..dc8444419c3
--- /dev/null
+++ b/usr.bin/sudo/fileops.c
@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 1999 Todd C. Miller <Todd.Miller@courtesan.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * 4. Products derived from this software may not be called "Sudo" nor
+ *    may "Sudo" appear in their names without specific prior written
+ *    permission from the author.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+#include <fcntl.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#ifdef HAVE_UTIME
+# ifdef HAVE_UTIME_H
+#  include <utime.h>
+# endif /* HAVE_UTIME_H */
+#else
+#  include "emul/utime.h"
+#endif /* HAVE_UTIME */
+
+#include "sudo.h"
+
+#ifndef lint
+static const char rcsid[] = "$Sudo: fileops.c,v 1.1 1999/08/07 09:59:43 millert Exp $";
+#endif /* lint */
+
+/*
+ * Update the access and modify times on a file.
+ */
+int
+touch(path, when)
+    char *path;
+    time_t when;
+{
+#ifdef HAVE_UTIME_POSIX
+    struct utimbuf ut, *utp;
+
+    ut.actime = ut.modtime = when;
+    utp = &ut;
+#else
+    /* BSD <= 4.3 has no struct utimbuf */
+    time_t utp[2];
+
+    utp[0] = utp[1] = when;
+#endif /* HAVE_UTIME_POSIX */
+
+    return(utime(path, utp));
+}
+
+/*
+ * Lock/unlock a file.
+ */
+#ifdef HAVE_LOCKF
+int
+lock_file(fd, lockit)
+    int fd;
+    int lockit;
+{
+    int op = 0;
+
+    switch (lockit) {
+	case SUDO_LOCK:
+	    op = F_LOCK;
+	    break;
+	case SUDO_TLOCK:
+	    op = F_TLOCK;
+	    break;
+	case SUDO_UNLOCK:
+	    op = F_ULOCK;
+	    break;
+    }
+    return(lockf(fd, op, 0) == 0);
+}
+#elif HAVE_FLOCK
+int
+lock_file(fd, lockit)
+    int fd;
+    int lockit;
+{
+    int op = 0;
+
+    switch (lockit) {
+	case SUDO_LOCK:
+	    op = LOCK_EX;
+	    break;
+	case SUDO_TLOCK:
+	    op = LOCK_EX | LOCK_NB;
+	    break;
+	case SUDO_UNLOCK:
+	    op = LOCK_EX;
+	    break;
+    }
+    return(flock(fd, op) == 0);
+}
+#else
+int
+lock_file(fd, lockit)
+    int fd;
+    int lockit;
+{
+#ifdef F_SETLK
+    int func;
+    struct flock lock;
+
+    lock.l_start = 0;
+    lock.l_len = 0;
+    lock.l_pid = getpid();
+    lock.l_type = (lockit == SUDO_UNLOCK) ? F_UNLCK : F_WRLCK;
+    lock.l_whence = SEEK_SET;
+    func = (lockit == SUDO_TLOCK) ? F_SETLK : F_SETLKW;
+
+    return(fcntl(fd, func, &lock) == 0);
+#else
+    return(TRUE);
+#endif
+}
+#endif