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 | |
13 | static 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 | |
24 | char *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 | |
37 | int 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 | |
42 | int 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 | |
48 | bool 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 */ |
59 | bool 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 | |
71 | bool 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 | |