1 #include <stdlib.h>
2 #include <stdio.h>
3 #include <string.h>
4 #include <unistd.h>
5
6 #include <private/android_filesystem_config.h>
7
8 #define DO_DEBUG 1
9
10 #define ERROR(fmt,args...) \
11 do { \
12 fprintf(stderr, "%s:%d: ERROR: " fmt, \
13 __FILE__, __LINE__, ##args); \
14 } while (0)
15
16 #if DO_DEBUG
17 #define DEBUG(fmt,args...) \
18 do { fprintf(stderr, "DEBUG: " fmt, ##args); } while(0)
19 #else
20 #define DEBUG(x...) do {} while(0)
21 #endif
22
23 void
print_help(void)24 print_help(void)
25 {
26 fprintf(stderr, "fs_get_stats: retrieve the target file stats "
27 "for the specified file\n");
28 fprintf(stderr, "usage: fs_get_stats cur_perms is_dir filename targetout\n");
29 fprintf(stderr, "\tcur_perms - The current permissions of "
30 "the file\n");
31 fprintf(stderr, "\tis_dir - Is filename is a dir, 1. Otherwise, 0.\n");
32 fprintf(stderr, "\tfilename - The filename to lookup\n");
33 fprintf(stderr, "\ttargetout - The target out path to query device specific FS configs\n");
34 fprintf(stderr, "\n");
35 }
36
37 int
main(int argc,const char * argv[])38 main(int argc, const char *argv[])
39 {
40 char *endptr;
41 char is_dir = 0;
42 unsigned perms = 0;
43 unsigned uid = (unsigned)-1;
44 unsigned gid = (unsigned)-1;
45
46 if (argc < 5) {
47 ERROR("Invalid arguments\n");
48 print_help();
49 exit(-1);
50 }
51
52 perms = (unsigned)strtoul(argv[1], &endptr, 0);
53 if (!endptr || (endptr == argv[1]) || (*endptr != '\0')) {
54 ERROR("current permissions must be a number. Got '%s'.\n", argv[1]);
55 exit(-1);
56 }
57
58 if (!strcmp(argv[2], "1"))
59 is_dir = 1;
60
61 uint64_t capabilities;
62 fs_config(argv[3], is_dir, argv[4], &uid, &gid, &perms, &capabilities);
63 fprintf(stdout, "%d %d 0%o\n", uid, gid, perms);
64
65 return 0;
66 }
67