1 files changed, 167 insertions, 0 deletions
diff --git a/diskdev_cmds/fstyp.tproj/fstyp.c b/diskdev_cmds/fstyp.tproj/fstyp.c
new file mode 100644
index 0000000..840c4aa
--- /dev/null
+++ b/diskdev_cmds/fstyp.tproj/fstyp.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sysexits.h>
+
+#define FSTYP_PREFIX	"fstyp_"
+#define MAX_PATH_LEN	80
+#define MAX_CMD_LEN	(MAX_PATH_LEN * 2)
+#define NULL_REDIRECTION ">/dev/null 2>&1"
+
+void usage(void);
+int select_fstyp(const struct dirent * dp);
+int test(const char *dir, const struct dirent * dp, const char *dev);
+void dealloc(struct dirent ** dpp, int numElems);
+
+char           *progname;
+
+/*
+ * The fstyp command iterates through the binary directories to look for
+ * commands of the form fstyp_* and runs them, trying to find one that
+ * matches the given device. Once one of the returns success, fstyp
+ * prints out that file system type name and terminates. 1 is returned
+ * if any match is found, and 0 is returned if no match is found.
+ */
+
+int
+main(int argc, char *argv[])
+{
+	/* NULL-terminated list of directories to search for fstyp_* commands */
+	const char     *DIRS[] = {	"/bin/",
+					"/sbin/",
+					"/usr/bin/",
+					"/usr/sbin/",
+					"/usr/local/bin/",
+					"/usr/local/sbin/",
+					NULL};
+
+	int numMatches, i, j, found;
+	struct stat sb;
+	struct dirent **dpp;
+
+	numMatches = 0;
+	i = 0;
+	j = 0;
+	found = 0;
+
+	if ((progname = strrchr(*argv, '/')))
+		++progname;
+	else
+		progname = *argv;
+
+	if (argc != 2) {
+		usage();
+		return EX_USAGE;
+	}
+	if (0 == stat(argv[1], &sb)) {
+		for (i = 0; (!found && (NULL != DIRS[i])); i++) {
+			/*
+			 * scan DIRS[i] for files that start with
+			 * "fstyp_"
+			 */
+			numMatches = scandir(DIRS[i], &dpp, select_fstyp, NULL);
+
+			if (numMatches >= 0) {
+				for (j = 0; (!found && (j < numMatches)); j++) {
+					if (test(DIRS[i], dpp[j], argv[1]) == 1) {
+						puts(dpp[j]->d_name + 6);
+
+						found = 1;
+					}
+				}
+
+				dealloc(dpp, numMatches);
+				dpp = NULL;
+			}
+		}
+	}
+	return found;
+}
+
+int
+select_fstyp(const struct dirent * dp)
+{
+	return ((dp != NULL) &&
+		((dp->d_type == DT_REG) || (dp->d_type == DT_LNK)) &&
+		(dp->d_namlen > strlen(FSTYP_PREFIX)) &&
+		(!strncmp(FSTYP_PREFIX, dp->d_name, strlen(FSTYP_PREFIX))));
+}
+
+/* return dp if successful, else return NULL */
+int
+test(const char *dir, const struct dirent * dp, const char *dev)
+{
+	char cmd[MAX_CMD_LEN + 1] = {0};
+	int status;
+	FILE *fileptr;
+
+	status = 0;
+
+	/* + 1 for white space */
+	if ((strlen(dir) + dp->d_namlen + 1 + strlen(dev) +
+	    strlen(NULL_REDIRECTION)) > MAX_CMD_LEN) {
+		return 0;
+	}
+	snprintf(cmd, sizeof(cmd), "%s%s %s", dir, dp->d_name, dev);
+
+	if ((fileptr = popen(cmd, "r")) != NULL) {
+		status = pclose(fileptr);
+
+		if (WIFEXITED(status)) {
+			if (WEXITSTATUS(status) == 1) {
+				return 1;
+			}
+		}
+	}
+	return 0;
+}
+
+void
+dealloc(struct dirent ** dpp, int numElems)
+{
+	int i;
+
+	for (i = 0; i < numElems; i++) {
+		free(dpp[i]);
+		dpp[i] = NULL;
+	}
+
+	free(dpp);
+
+	return;
+}
+
+
+void
+usage(void)
+{
+	fprintf(stdout, "usage: %s device\n", progname);
+	return;
+}