diff options
Diffstat (limited to 'tools/perf/util/sysfs.c')
-rw-r--r-- | tools/perf/util/sysfs.c | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/tools/perf/util/sysfs.c b/tools/perf/util/sysfs.c deleted file mode 100644 index f71e9eafe15a..000000000000 --- a/tools/perf/util/sysfs.c +++ /dev/null | |||
@@ -1,60 +0,0 @@ | |||
1 | |||
2 | #include "util.h" | ||
3 | #include "sysfs.h" | ||
4 | |||
5 | static const char * const sysfs_known_mountpoints[] = { | ||
6 | "/sys", | ||
7 | 0, | ||
8 | }; | ||
9 | |||
10 | static int sysfs_found; | ||
11 | char sysfs_mountpoint[PATH_MAX + 1]; | ||
12 | |||
13 | static int sysfs_valid_mountpoint(const char *sysfs) | ||
14 | { | ||
15 | struct statfs st_fs; | ||
16 | |||
17 | if (statfs(sysfs, &st_fs) < 0) | ||
18 | return -ENOENT; | ||
19 | else if (st_fs.f_type != (long) SYSFS_MAGIC) | ||
20 | return -ENOENT; | ||
21 | |||
22 | return 0; | ||
23 | } | ||
24 | |||
25 | const char *sysfs_find_mountpoint(void) | ||
26 | { | ||
27 | const char * const *ptr; | ||
28 | char type[100]; | ||
29 | FILE *fp; | ||
30 | |||
31 | if (sysfs_found) | ||
32 | return (const char *) sysfs_mountpoint; | ||
33 | |||
34 | ptr = sysfs_known_mountpoints; | ||
35 | while (*ptr) { | ||
36 | if (sysfs_valid_mountpoint(*ptr) == 0) { | ||
37 | sysfs_found = 1; | ||
38 | strcpy(sysfs_mountpoint, *ptr); | ||
39 | return sysfs_mountpoint; | ||
40 | } | ||
41 | ptr++; | ||
42 | } | ||
43 | |||
44 | /* give up and parse /proc/mounts */ | ||
45 | fp = fopen("/proc/mounts", "r"); | ||
46 | if (fp == NULL) | ||
47 | return NULL; | ||
48 | |||
49 | while (!sysfs_found && | ||
50 | fscanf(fp, "%*s %" STR(PATH_MAX) "s %99s %*s %*d %*d\n", | ||
51 | sysfs_mountpoint, type) == 2) { | ||
52 | |||
53 | if (strcmp(type, "sysfs") == 0) | ||
54 | sysfs_found = 1; | ||
55 | } | ||
56 | |||
57 | fclose(fp); | ||
58 | |||
59 | return sysfs_found ? sysfs_mountpoint : NULL; | ||
60 | } | ||