Patchwork build mount.smb2 from mount.cifs

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Submitter Steve French
Date May 7, 2010, 5:26 p.m.
Message ID <l2o524f69651005071026x2e3503fdwa90a81d02a425a31@mail.gmail.com>
Download mbox | patch
Permalink /patch/51938/
State New
Headers show

Comments

Steve French - May 7, 2010, 5:26 p.m.
mount.smb2 has different help (many fewer mount options) and different
fsname, but otherwise can reuse all of the good work Jeff did on
mount.cifs.  This patch allow mount.cifs to detect if run as
mount.smb2 (to display different help and fsname).

Patch

diff --git a/mount.cifs.c b/mount.cifs.c
index c4eb59a..02ba4ef 100644
--- a/mount.cifs.c
+++ b/mount.cifs.c
@@ -1,6 +1,6 @@ 
 /*
  * Mount helper utility for Linux CIFS VFS (virtual filesystem) client
- * Copyright (C) 2003,2008 Steve French  (sfrench@us.ibm.com)
+ * Copyright (C) 2003,2010 Steve French  (sfrench@us.ibm.com)
  * Copyright (C) 2008 Jeremy Allison (jra@samba.org)
  * Copyright (C) 2010 Jeff Layton (jlayton@samba.org)
  *
@@ -147,8 +147,9 @@  struct parsed_mount_info {
 	unsigned int verboseflag:1;
 };
 
-const char *thisprogram;
+char *thisprogram; /* the basename of the program */
 const char *cifs_fstype = "cifs";
+const char *smb2_fstype = "smb2";
 
 static int parse_unc(const char *unc_name, struct parsed_mount_info *parsed_info);
 
@@ -257,6 +258,52 @@  static int mount_cifs_usage(FILE * stream)
 	return 0;
 }
 
+static int mount_smb2_usage(FILE *stream)
+{
+	fprintf(stream, "\nUsage:  %s <remotetarget> <dir> -o <options>\n",
+		thisprogram);
+	fprintf(stream, "\nMount the remote target, specified as a UNC name,");
+	fprintf(stream, " to a local directory.\n\nOptions:\n");
+	fprintf(stream, "\tuser=<arg>\n\tpass=<arg>\n\tdom=<arg>\n");
+	fprintf(stream, "\nLess commonly used options:");
+	fprintf(stream,
+		"\n\tcredentials=<filename>,guest,perm,noperm,rw,ro,");
+	fprintf(stream,
+		"\n\tsep=<char>,iocharset=<codepage>,exec,noexec");
+	fprintf(stream,
+		"\n\tnolock,directio,sec=<authentication mechanism>,sign");
+	fprintf(stream,
+		"\n\tuid=<uid>,gid=<gid>,dir_mode=<mode>,file_mode=<mode>");
+	fprintf(stream, "\n\nRarely used options:");
+	fprintf(stream,
+		"\n\tport=<tcpport>,rsize=<size>,wsize=<size>,unc=<unc_name>,ip=<ip_address>,");
+	fprintf(stream,
+		"\n\tdev,nodev,hard,soft,intr,");
+	fprintf(stream,
+		"\n\tnointr,ignorecase,noacl,prefixpath=<path>,nobrl");
+	fprintf(stream,
+		"\n\nOptions are described in more detail in the manual page");
+	fprintf(stream, "\n\tman 8 mount.smb2\n");
+	fprintf(stream, "\nTo display the version number of the mount helper:");
+	fprintf(stream, "\n\tmount.smb2 -V\n");
+
+	if (stream == stderr)
+		return EX_USAGE;
+	return 0;
+}
+
+static int mount_usage(FILE *stream)
+{
+	int rc;
+
+	if (strcmp(thisprogram, "mount.smb2") == 0)
+		rc = mount_smb2_usage(stream);
+	else
+		rc = mount_cifs_usage(stream);
+
+	return rc;
+}
+
 /*
  * CIFS has to "escape" commas in the password field so that they don't
  * end up getting confused for option delimiters. Copy password into pw
@@ -1283,7 +1330,7 @@  static int check_mtab(const char *progname, const char *devname,
 }
 
 static int
-add_mtab(char *devname, char *mountpoint, unsigned long flags)
+add_mtab(char *devname, char *mountpoint, unsigned long flags, const char *fstype)
 {
 	int rc = 0;
 	uid_t uid;
@@ -1342,7 +1389,8 @@  add_mtab(char *devname, char *mountpoint, unsigned long flags)
 
 	mountent.mnt_fsname = devname;
 	mountent.mnt_dir = mountpoint;
-	mountent.mnt_type = (char *)(void *)cifs_fstype;
+	
+	mountent.mnt_type = (char *)(void *)fstype;
 	mountent.mnt_opts = (char *)calloc(MTAB_OPTIONS_LEN, 1);
 	if (mountent.mnt_opts) {
 		if (flags & MS_RDONLY)
@@ -1529,6 +1577,7 @@  int main(int argc, char **argv)
 	size_t dev_len;
 	struct parsed_mount_info *parsed_info = NULL;
 	pid_t pid;
+	char *fstype;
 
 	rc = check_setuid();
 	if (rc)
@@ -1543,11 +1592,11 @@  int main(int argc, char **argv)
 	   textdomain(PACKAGE); */
 
 	if (!argc || !argv) {
-		rc = mount_cifs_usage(stderr);
+		rc = mount_usage(stderr, argv[0]);
 		goto mount_exit;
 	}
 
-	thisprogram = argv[0];
+	thisprogram = basename(argv[0]);
 	if (thisprogram == NULL)
 		thisprogram = "mount.cifs";
 
@@ -1569,7 +1618,7 @@  int main(int argc, char **argv)
 		switch (c) {
 		case '?':
 		case 'h':	/* help */
-			rc = mount_cifs_usage(stdout);
+			rc = mount_usage(stdout, argv[0]);
 			goto mount_exit;
 		case 'n':
 			++parsed_info->nomtab;
@@ -1598,13 +1647,13 @@  int main(int argc, char **argv)
 			break;
 		default:
 			fprintf(stderr, "unknown command-line option: %c\n", c);
-			rc = mount_cifs_usage(stderr);
+			rc = mount_usage(stderr, argv[0]);
 			goto mount_exit;
 		}
 	}
 
 	if (argc < 3 || argv[optind] == NULL || argv[optind + 1] == NULL) {
-		rc = mount_cifs_usage(stderr);
+		rc = mount_usage(stderr, argv[0]);
 		goto mount_exit;
 	}
 
@@ -1721,8 +1770,8 @@  mount_retry:
 	}
 
 	if (parsed_info->verboseflag)
-		fprintf(stderr, "mount.cifs kernel mount options: %s",
-			options);
+		fprintf(stderr, "%s kernel mount options: %s",
+			progname, options);
 
 	if (parsed_info->got_password) {
 		/*
@@ -1742,8 +1791,13 @@  mount_retry:
 	if (rc)
 		goto mount_exit;
 
+	if (strcmp(progname, "mount.smb2") == 0)
+		fstype = smb2_fstype;
+	else
+		fstype = cifs_fstype;
+
 	if (!parsed_info->fakemnt
-	    && mount(dev_name, ".", cifs_fstype, parsed_info->flags, options)) {
+	    && mount(dev_name, ".", fstype, parsed_info->flags, options)) {
 		switch (errno) {
 		case ECONNREFUSED:
 		case EHOSTUNREACH:
@@ -1756,7 +1810,7 @@  mount_retry:
 			goto mount_retry;
 		case ENODEV:
 			fprintf(stderr,
-				"mount error: cifs filesystem not supported by the system\n");
+				"mount error: %s filesystem not supported by the system\n", fstype);
 			break;
 		case ENXIO:
 			if (!already_uppercased &&
@@ -1772,14 +1826,15 @@  mount_retry:
 		fprintf(stderr, "mount error(%d): %s\n", errno,
 			strerror(errno));
 		fprintf(stderr,
-			"Refer to the mount.cifs(8) manual page (e.g. man "
-			"mount.cifs)\n");
+			"Refer to the %s(8) manual page (e.g. man "
+			"%s)\n", progname, progname);
 		rc = EX_FAIL;
 		goto mount_exit;
 	}
 
-	if (!parsed_info->nomtab)
-		rc = add_mtab(dev_name, mountpoint, parsed_info->flags);
+	if (!parsed_info->nomtab) {
+		rc = add_mtab(dev_name, mountpoint, parsed_info->flags, fstype);
+	}
 
 mount_exit:
 	if (parsed_info) {