diff options
Diffstat (limited to 'ANDROID_3.4.5/tools/perf/util/sysfs.c')
-rw-r--r-- | ANDROID_3.4.5/tools/perf/util/sysfs.c | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/ANDROID_3.4.5/tools/perf/util/sysfs.c b/ANDROID_3.4.5/tools/perf/util/sysfs.c deleted file mode 100644 index 48c6902e..00000000 --- a/ANDROID_3.4.5/tools/perf/util/sysfs.c +++ /dev/null @@ -1,60 +0,0 @@ - -#include "util.h" -#include "sysfs.h" - -static const char * const sysfs_known_mountpoints[] = { - "/sys", - 0, -}; - -static int sysfs_found; -char sysfs_mountpoint[PATH_MAX]; - -static int sysfs_valid_mountpoint(const char *sysfs) -{ - struct statfs st_fs; - - if (statfs(sysfs, &st_fs) < 0) - return -ENOENT; - else if (st_fs.f_type != (long) SYSFS_MAGIC) - return -ENOENT; - - return 0; -} - -const char *sysfs_find_mountpoint(void) -{ - const char * const *ptr; - char type[100]; - FILE *fp; - - if (sysfs_found) - return (const char *) sysfs_mountpoint; - - ptr = sysfs_known_mountpoints; - while (*ptr) { - if (sysfs_valid_mountpoint(*ptr) == 0) { - sysfs_found = 1; - strcpy(sysfs_mountpoint, *ptr); - return sysfs_mountpoint; - } - ptr++; - } - - /* give up and parse /proc/mounts */ - fp = fopen("/proc/mounts", "r"); - if (fp == NULL) - return NULL; - - while (!sysfs_found && - fscanf(fp, "%*s %" STR(PATH_MAX) "s %99s %*s %*d %*d\n", - sysfs_mountpoint, type) == 2) { - - if (strcmp(type, "sysfs") == 0) - sysfs_found = 1; - } - - fclose(fp); - - return sysfs_found ? sysfs_mountpoint : NULL; -} |