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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/fs/hpfs/name.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/fs/hpfs/name.c')
-rw-r--r--kernel/fs/hpfs/name.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/kernel/fs/hpfs/name.c b/kernel/fs/hpfs/name.c
new file mode 100644
index 000000000..b00d396d2
--- /dev/null
+++ b/kernel/fs/hpfs/name.c
@@ -0,0 +1,113 @@
+/*
+ * linux/fs/hpfs/name.c
+ *
+ * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
+ *
+ * operations with filenames
+ */
+
+#include "hpfs_fn.h"
+
+static inline int not_allowed_char(unsigned char c)
+{
+ return c<' ' || c=='"' || c=='*' || c=='/' || c==':' || c=='<' ||
+ c=='>' || c=='?' || c=='\\' || c=='|';
+}
+
+static inline int no_dos_char(unsigned char c)
+{ /* Characters that are allowed in HPFS but not in DOS */
+ return c=='+' || c==',' || c==';' || c=='=' || c=='[' || c==']';
+}
+
+static inline unsigned char upcase(unsigned char *dir, unsigned char a)
+{
+ if (a<128 || a==255) return a>='a' && a<='z' ? a - 0x20 : a;
+ if (!dir) return a;
+ return dir[a-128];
+}
+
+unsigned char hpfs_upcase(unsigned char *dir, unsigned char a)
+{
+ return upcase(dir, a);
+}
+
+static inline unsigned char locase(unsigned char *dir, unsigned char a)
+{
+ if (a<128 || a==255) return a>='A' && a<='Z' ? a + 0x20 : a;
+ if (!dir) return a;
+ return dir[a];
+}
+
+int hpfs_chk_name(const unsigned char *name, unsigned *len)
+{
+ int i;
+ if (*len > 254) return -ENAMETOOLONG;
+ hpfs_adjust_length(name, len);
+ if (!*len) return -EINVAL;
+ for (i = 0; i < *len; i++) if (not_allowed_char(name[i])) return -EINVAL;
+ if (*len == 1) if (name[0] == '.') return -EINVAL;
+ if (*len == 2) if (name[0] == '.' && name[1] == '.') return -EINVAL;
+ return 0;
+}
+
+unsigned char *hpfs_translate_name(struct super_block *s, unsigned char *from,
+ unsigned len, int lc, int lng)
+{
+ unsigned char *to;
+ int i;
+ if (hpfs_sb(s)->sb_chk >= 2) if (hpfs_is_name_long(from, len) != lng) {
+ pr_err("Long name flag mismatch - name ");
+ for (i = 0; i < len; i++)
+ pr_cont("%c", from[i]);
+ pr_cont(" misidentified as %s.\n", lng ? "short" : "long");
+ pr_err("It's nothing serious. It could happen because of bug in OS/2.\nSet checks=normal to disable this message.\n");
+ }
+ if (!lc) return from;
+ if (!(to = kmalloc(len, GFP_KERNEL))) {
+ pr_err("can't allocate memory for name conversion buffer\n");
+ return from;
+ }
+ for (i = 0; i < len; i++) to[i] = locase(hpfs_sb(s)->sb_cp_table,from[i]);
+ return to;
+}
+
+int hpfs_compare_names(struct super_block *s,
+ const unsigned char *n1, unsigned l1,
+ const unsigned char *n2, unsigned l2, int last)
+{
+ unsigned l = l1 < l2 ? l1 : l2;
+ unsigned i;
+ if (last) return -1;
+ for (i = 0; i < l; i++) {
+ unsigned char c1 = upcase(hpfs_sb(s)->sb_cp_table,n1[i]);
+ unsigned char c2 = upcase(hpfs_sb(s)->sb_cp_table,n2[i]);
+ if (c1 < c2) return -1;
+ if (c1 > c2) return 1;
+ }
+ if (l1 < l2) return -1;
+ if (l1 > l2) return 1;
+ return 0;
+}
+
+int hpfs_is_name_long(const unsigned char *name, unsigned len)
+{
+ int i,j;
+ for (i = 0; i < len && name[i] != '.'; i++)
+ if (no_dos_char(name[i])) return 1;
+ if (!i || i > 8) return 1;
+ if (i == len) return 0;
+ for (j = i + 1; j < len; j++)
+ if (name[j] == '.' || no_dos_char(name[i])) return 1;
+ return j - i > 4;
+}
+
+/* OS/2 clears dots and spaces at the end of file name, so we have to */
+
+void hpfs_adjust_length(const unsigned char *name, unsigned *len)
+{
+ if (!*len) return;
+ if (*len == 1 && name[0] == '.') return;
+ if (*len == 2 && name[0] == '.' && name[1] == '.') return;
+ while (*len && (name[*len - 1] == '.' || name[*len - 1] == ' '))
+ (*len)--;
+}