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comparison rvinterf/etmsync/fspath.c @ 295:3dd74b16df82

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fc-fsio: pathname recursion handling revamped
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sat, 01 Mar 2014 08:01:08 +0000
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294:797468042b32 295:3dd74b16df82
1 /*
2 * FFS pathname manipulation functions
3 */
4
5 #include <sys/types.h>
6 #include <stdio.h>
7 #include <stdlib.h>
8 #include <string.h>
9 #include <strings.h>
10 #include "ffs.h"
11 #include "limits.h"
12 #include "ffslimits.h"
13 #include "exitcodes.h"
14
15 validate_ffs_pathname(cand)
16 char *cand;
17 {
18 char *cp;
19 int depth, c;
20
21 cp = cand;
22 if (*cp++ != '/') {
23 fprintf(stderr, "error: FFS pathnames must be absolute\n");
24 return(-1);
25 }
26 for (depth = 0; *cp; depth++) {
27 if (*cp == '/') {
28 fprintf(stderr,
29 "error: FFS pathname must not contain duplicate slashes\n");
30 return(-1);
31 }
32 for (c = 0; *cp && *cp != '/'; cp++)
33 c++;
34 if (c > MAX_FN_COMPONENT) {
35 fprintf(stderr,
36 "error: FFS pathname component is too long\n");
37 return(-1);
38 }
39 if (!*cp)
40 continue;
41 cp++;
42 if (!*cp) {
43 fprintf(stderr,
44 "error: FFS pathname must not end with a trailing slash\n");
45 return(-1);
46 }
47 }
48 if (depth > MAX_NAME_DEPTH) {
49 fprintf(stderr, "error: FFS pathname exceeds depth limit\n");
50 return(-1);
51 }
52 return(depth);
53 }
54
55 char *
56 pathname_for_ffs_child(parent, childbuf)
57 char *parent, *childbuf;
58 {
59 int depth;
60 char *cp;
61
62 depth = validate_ffs_pathname(parent);
63 if (depth < 0 || depth >= MAX_NAME_DEPTH)
64 return(0);
65 strcpy(childbuf, parent);
66 cp = index(childbuf, '\0');
67 if (depth)
68 *cp++ = '/';
69 return(cp);
70 }