add new subdir for e2fsprogs
diff --git a/e2fsprogs/e2p/mntopts.c b/e2fsprogs/e2p/mntopts.c
new file mode 100644
index 0000000..6d0eca0
--- /dev/null
+++ b/e2fsprogs/e2p/mntopts.c
@@ -0,0 +1,136 @@
+/*
+ * mountopts.c --- convert between default mount options and strings
+ *
+ * Copyright (C) 2002 Theodore Ts'o <tytso@mit.edu>
+ *
+ * This file can be redistributed under the terms of the GNU Library General
+ * Public License
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+
+#include "e2p.h"
+
+struct mntopt {
+ unsigned int mask;
+ const char *string;
+};
+
+static struct mntopt mntopt_list[] = {
+ { EXT2_DEFM_DEBUG, "debug" },
+ { EXT2_DEFM_BSDGROUPS, "bsdgroups" },
+ { EXT2_DEFM_XATTR_USER, "user_xattr" },
+ { EXT2_DEFM_ACL, "acl" },
+ { EXT2_DEFM_UID16, "uid16" },
+ { EXT3_DEFM_JMODE_DATA, "journal_data" },
+ { EXT3_DEFM_JMODE_ORDERED, "journal_data_ordered" },
+ { EXT3_DEFM_JMODE_WBACK, "journal_data_writeback" },
+ { 0, 0 },
+};
+
+const char *e2p_mntopt2string(unsigned int mask)
+{
+ struct mntopt *f;
+ static char buf[20];
+ int fnum;
+
+ for (f = mntopt_list; f->string; f++) {
+ if (mask == f->mask)
+ return f->string;
+ }
+ for (fnum = 0; mask >>= 1; fnum++);
+ sprintf(buf, "MNTOPT_%d", fnum);
+ return buf;
+}
+
+int e2p_string2mntopt(char *string, unsigned int *mask)
+{
+ struct mntopt *f;
+ char *eptr;
+ int num;
+
+ for (f = mntopt_list; f->string; f++) {
+ if (!strcasecmp(string, f->string)) {
+ *mask = f->mask;
+ return 0;
+ }
+ }
+ if (strncasecmp(string, "MNTOPT_", 8))
+ return 1;
+
+ if (string[8] == 0)
+ return 1;
+ num = strtol(string+8, &eptr, 10);
+ if (num > 32 || num < 0)
+ return 1;
+ if (*eptr)
+ return 1;
+ *mask = 1 << num;
+ return 0;
+}
+
+static char *skip_over_blanks(char *cp)
+{
+ while (*cp && isspace(*cp))
+ cp++;
+ return cp;
+}
+
+static char *skip_over_word(char *cp)
+{
+ while (*cp && !isspace(*cp) && *cp != ',')
+ cp++;
+ return cp;
+}
+
+/*
+ * Edit a mntopt set array as requested by the user. The ok
+ * parameter, if non-zero, allows the application to limit what
+ * mntopts the user is allowed to set or clear using this function.
+ */
+int e2p_edit_mntopts(const char *str, __u32 *mntopts, __u32 ok)
+{
+ char *cp, *buf, *next;
+ int neg;
+ unsigned int mask;
+
+ buf = malloc(strlen(str)+1);
+ if (!buf)
+ return 1;
+ strcpy(buf, str);
+ cp = buf;
+ while (cp && *cp) {
+ neg = 0;
+ cp = skip_over_blanks(cp);
+ next = skip_over_word(cp);
+ if (*next == 0)
+ next = 0;
+ else
+ *next = 0;
+ switch (*cp) {
+ case '-':
+ case '^':
+ neg++;
+ case '+':
+ cp++;
+ break;
+ }
+ if (e2p_string2mntopt(cp, &mask))
+ return 1;
+ if (ok && !(ok & mask))
+ return 1;
+ if (mask & EXT3_DEFM_JMODE)
+ *mntopts &= ~EXT3_DEFM_JMODE;
+ if (neg)
+ *mntopts &= ~mask;
+ else
+ *mntopts |= mask;
+ cp = next ? next+1 : 0;
+ }
+ return 0;
+}