1// SPDX-License-Identifier: GPL-2.0
2#include "path.h"
3#include "cache.h"
4#include <linux/kernel.h>
5#include <limits.h>
6#include <stdio.h>
7#include <string.h>
8#include <sys/types.h>
9#include <sys/stat.h>
10#include <dirent.h>
11#include <unistd.h>
12
13static char *cleanup_path(char *path)
14{
15 /* Clean it up */
16 if (!memcmp(p: path, q: "./", size: 2)) {
17 path += 2;
18 while (*path == '/')
19 path++;
20 }
21 return path;
22}
23
24char *mkpath(char *path_buf, size_t sz, const char *fmt, ...)
25{
26 va_list args;
27 unsigned len;
28
29 va_start(args, fmt);
30 len = vsnprintf(buf: path_buf, size: sz, fmt, args);
31 va_end(args);
32 if (len >= sz)
33 strncpy(p: path_buf, q: "/bad-path/", size: sz);
34 return cleanup_path(path: path_buf);
35}
36
37int path__join(char *bf, size_t size, const char *path1, const char *path2)
38{
39 return scnprintf(buf: bf, size, fmt: "%s%s%s", path1, path1[0] ? "/" : "", path2);
40}
41
42int path__join3(char *bf, size_t size, const char *path1, const char *path2, const char *path3)
43{
44 return scnprintf(buf: bf, size, fmt: "%s%s%s%s%s", path1, path1[0] ? "/" : "",
45 path2, path2[0] ? "/" : "", path3);
46}
47
48bool is_regular_file(const char *file)
49{
50 struct stat st;
51
52 if (stat(file, &st))
53 return false;
54
55 return S_ISREG(st.st_mode);
56}
57
58/* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */
59bool is_directory(const char *base_path, const struct dirent *dent)
60{
61 char path[PATH_MAX];
62 struct stat st;
63
64 snprintf(buf: path, size: sizeof(path), fmt: "%s/%s", base_path, dent->d_name);
65 if (stat(path, &st))
66 return false;
67
68 return S_ISDIR(st.st_mode);
69}
70
71bool is_executable_file(const char *base_path, const struct dirent *dent)
72{
73 char path[PATH_MAX];
74 struct stat st;
75
76 snprintf(buf: path, size: sizeof(path), fmt: "%s/%s", base_path, dent->d_name);
77 if (stat(path, &st))
78 return false;
79
80 return !S_ISDIR(st.st_mode) && (st.st_mode & S_IXUSR);
81}
82

source code of linux/tools/perf/util/path.c