diff options
Diffstat (limited to 'tools/bpf/bpftool/common.c')
| -rw-r--r-- | tools/bpf/bpftool/common.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/tools/bpf/bpftool/common.c b/tools/bpf/bpftool/common.c index 24582e8a96fb..1bad6602a282 100644 --- a/tools/bpf/bpftool/common.c +++ b/tools/bpf/bpftool/common.c @@ -76,7 +76,8 @@ void set_max_rlimit(void) setrlimit(RLIMIT_MEMLOCK, &rinf); } -static int mnt_bpffs(const char *target, char *buff, size_t bufflen) +static int +mnt_fs(const char *target, const char *type, char *buff, size_t bufflen) { bool bind_done = false; @@ -98,15 +99,29 @@ static int mnt_bpffs(const char *target, char *buff, size_t bufflen) bind_done = true; } - if (mount("bpf", target, "bpf", 0, "mode=0700")) { - snprintf(buff, bufflen, "mount -t bpf bpf %s failed: %s", - target, strerror(errno)); + if (mount(type, target, type, 0, "mode=0700")) { + snprintf(buff, bufflen, "mount -t %s %s %s failed: %s", + type, type, target, strerror(errno)); return -1; } return 0; } +int mount_tracefs(const char *target) +{ + char err_str[ERR_MAX_LEN]; + int err; + + err = mnt_fs(target, "tracefs", err_str, ERR_MAX_LEN); + if (err) { + err_str[ERR_MAX_LEN - 1] = '\0'; + p_err("can't mount tracefs: %s", err_str); + } + + return err; +} + int open_obj_pinned(char *path, bool quiet) { int fd; @@ -162,7 +177,7 @@ int mount_bpffs_for_pin(const char *name) /* nothing to do if already mounted */ goto out_free; - err = mnt_bpffs(dir, err_str, ERR_MAX_LEN); + err = mnt_fs(dir, "bpf", err_str, ERR_MAX_LEN); if (err) { err_str[ERR_MAX_LEN - 1] = '\0'; p_err("can't mount BPF file system to pin the object (%s): %s", |