diff options
Diffstat (limited to 'tools/perf/util/path.c')
-rw-r--r-- | tools/perf/util/path.c | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/tools/perf/util/path.c b/tools/perf/util/path.c index fd1f2faaade4..b276c187802a 100644 --- a/tools/perf/util/path.c +++ b/tools/perf/util/path.c | |||
@@ -54,21 +54,6 @@ static char *cleanup_path(char *path) | |||
54 | return path; | 54 | return path; |
55 | } | 55 | } |
56 | 56 | ||
57 | char *mksnpath(char *buf, size_t n, const char *fmt, ...) | ||
58 | { | ||
59 | va_list args; | ||
60 | unsigned len; | ||
61 | |||
62 | va_start(args, fmt); | ||
63 | len = vsnprintf(buf, n, fmt, args); | ||
64 | va_end(args); | ||
65 | if (len >= n) { | ||
66 | strlcpy(buf, bad_path, n); | ||
67 | return buf; | ||
68 | } | ||
69 | return cleanup_path(buf); | ||
70 | } | ||
71 | |||
72 | static char *perf_vsnpath(char *buf, size_t n, const char *fmt, va_list args) | 57 | static char *perf_vsnpath(char *buf, size_t n, const char *fmt, va_list args) |
73 | { | 58 | { |
74 | const char *perf_dir = get_perf_dir(); | 59 | const char *perf_dir = get_perf_dir(); |
@@ -89,15 +74,6 @@ bad: | |||
89 | return buf; | 74 | return buf; |
90 | } | 75 | } |
91 | 76 | ||
92 | char *perf_snpath(char *buf, size_t n, const char *fmt, ...) | ||
93 | { | ||
94 | va_list args; | ||
95 | va_start(args, fmt); | ||
96 | (void)perf_vsnpath(buf, n, fmt, args); | ||
97 | va_end(args); | ||
98 | return buf; | ||
99 | } | ||
100 | |||
101 | char *perf_pathdup(const char *fmt, ...) | 77 | char *perf_pathdup(const char *fmt, ...) |
102 | { | 78 | { |
103 | char path[PATH_MAX]; | 79 | char path[PATH_MAX]; |
@@ -143,184 +119,6 @@ char *perf_path(const char *fmt, ...) | |||
143 | return cleanup_path(pathname); | 119 | return cleanup_path(pathname); |
144 | } | 120 | } |
145 | 121 | ||
146 | |||
147 | /* perf_mkstemp() - create tmp file honoring TMPDIR variable */ | ||
148 | int perf_mkstemp(char *path, size_t len, const char *template) | ||
149 | { | ||
150 | const char *tmp; | ||
151 | size_t n; | ||
152 | |||
153 | tmp = getenv("TMPDIR"); | ||
154 | if (!tmp) | ||
155 | tmp = "/tmp"; | ||
156 | n = snprintf(path, len, "%s/%s", tmp, template); | ||
157 | if (len <= n) { | ||
158 | errno = ENAMETOOLONG; | ||
159 | return -1; | ||
160 | } | ||
161 | return mkstemp(path); | ||
162 | } | ||
163 | |||
164 | |||
165 | const char *make_relative_path(const char *abs_path, const char *base) | ||
166 | { | ||
167 | static char buf[PATH_MAX + 1]; | ||
168 | int baselen; | ||
169 | |||
170 | if (!base) | ||
171 | return abs_path; | ||
172 | |||
173 | baselen = strlen(base); | ||
174 | if (prefixcmp(abs_path, base)) | ||
175 | return abs_path; | ||
176 | if (abs_path[baselen] == '/') | ||
177 | baselen++; | ||
178 | else if (base[baselen - 1] != '/') | ||
179 | return abs_path; | ||
180 | |||
181 | strcpy(buf, abs_path + baselen); | ||
182 | |||
183 | return buf; | ||
184 | } | ||
185 | |||
186 | /* | ||
187 | * It is okay if dst == src, but they should not overlap otherwise. | ||
188 | * | ||
189 | * Performs the following normalizations on src, storing the result in dst: | ||
190 | * - Ensures that components are separated by '/' (Windows only) | ||
191 | * - Squashes sequences of '/'. | ||
192 | * - Removes "." components. | ||
193 | * - Removes ".." components, and the components the precede them. | ||
194 | * Returns failure (non-zero) if a ".." component appears as first path | ||
195 | * component anytime during the normalization. Otherwise, returns success (0). | ||
196 | * | ||
197 | * Note that this function is purely textual. It does not follow symlinks, | ||
198 | * verify the existence of the path, or make any system calls. | ||
199 | */ | ||
200 | int normalize_path_copy(char *dst, const char *src) | ||
201 | { | ||
202 | char *dst0; | ||
203 | |||
204 | if (has_dos_drive_prefix(src)) { | ||
205 | *dst++ = *src++; | ||
206 | *dst++ = *src++; | ||
207 | } | ||
208 | dst0 = dst; | ||
209 | |||
210 | if (is_dir_sep(*src)) { | ||
211 | *dst++ = '/'; | ||
212 | while (is_dir_sep(*src)) | ||
213 | src++; | ||
214 | } | ||
215 | |||
216 | for (;;) { | ||
217 | char c = *src; | ||
218 | |||
219 | /* | ||
220 | * A path component that begins with . could be | ||
221 | * special: | ||
222 | * (1) "." and ends -- ignore and terminate. | ||
223 | * (2) "./" -- ignore them, eat slash and continue. | ||
224 | * (3) ".." and ends -- strip one and terminate. | ||
225 | * (4) "../" -- strip one, eat slash and continue. | ||
226 | */ | ||
227 | if (c == '.') { | ||
228 | if (!src[1]) { | ||
229 | /* (1) */ | ||
230 | src++; | ||
231 | } else if (is_dir_sep(src[1])) { | ||
232 | /* (2) */ | ||
233 | src += 2; | ||
234 | while (is_dir_sep(*src)) | ||
235 | src++; | ||
236 | continue; | ||
237 | } else if (src[1] == '.') { | ||
238 | if (!src[2]) { | ||
239 | /* (3) */ | ||
240 | src += 2; | ||
241 | goto up_one; | ||
242 | } else if (is_dir_sep(src[2])) { | ||
243 | /* (4) */ | ||
244 | src += 3; | ||
245 | while (is_dir_sep(*src)) | ||
246 | src++; | ||
247 | goto up_one; | ||
248 | } | ||
249 | } | ||
250 | } | ||
251 | |||
252 | /* copy up to the next '/', and eat all '/' */ | ||
253 | while ((c = *src++) != '\0' && !is_dir_sep(c)) | ||
254 | *dst++ = c; | ||
255 | if (is_dir_sep(c)) { | ||
256 | *dst++ = '/'; | ||
257 | while (is_dir_sep(c)) | ||
258 | c = *src++; | ||
259 | src--; | ||
260 | } else if (!c) | ||
261 | break; | ||
262 | continue; | ||
263 | |||
264 | up_one: | ||
265 | /* | ||
266 | * dst0..dst is prefix portion, and dst[-1] is '/'; | ||
267 | * go up one level. | ||
268 | */ | ||
269 | dst--; /* go to trailing '/' */ | ||
270 | if (dst <= dst0) | ||
271 | return -1; | ||
272 | /* Windows: dst[-1] cannot be backslash anymore */ | ||
273 | while (dst0 < dst && dst[-1] != '/') | ||
274 | dst--; | ||
275 | } | ||
276 | *dst = '\0'; | ||
277 | return 0; | ||
278 | } | ||
279 | |||
280 | /* | ||
281 | * path = Canonical absolute path | ||
282 | * prefix_list = Colon-separated list of absolute paths | ||
283 | * | ||
284 | * Determines, for each path in prefix_list, whether the "prefix" really | ||
285 | * is an ancestor directory of path. Returns the length of the longest | ||
286 | * ancestor directory, excluding any trailing slashes, or -1 if no prefix | ||
287 | * is an ancestor. (Note that this means 0 is returned if prefix_list is | ||
288 | * "/".) "/foo" is not considered an ancestor of "/foobar". Directories | ||
289 | * are not considered to be their own ancestors. path must be in a | ||
290 | * canonical form: empty components, or "." or ".." components are not | ||
291 | * allowed. prefix_list may be null, which is like "". | ||
292 | */ | ||
293 | int longest_ancestor_length(const char *path, const char *prefix_list) | ||
294 | { | ||
295 | char buf[PATH_MAX+1]; | ||
296 | const char *ceil, *colon; | ||
297 | int len, max_len = -1; | ||
298 | |||
299 | if (prefix_list == NULL || !strcmp(path, "/")) | ||
300 | return -1; | ||
301 | |||
302 | for (colon = ceil = prefix_list; *colon; ceil = colon+1) { | ||
303 | for (colon = ceil; *colon && *colon != PATH_SEP; colon++); | ||
304 | len = colon - ceil; | ||
305 | if (len == 0 || len > PATH_MAX || !is_absolute_path(ceil)) | ||
306 | continue; | ||
307 | strlcpy(buf, ceil, len+1); | ||
308 | if (normalize_path_copy(buf, buf) < 0) | ||
309 | continue; | ||
310 | len = strlen(buf); | ||
311 | if (len > 0 && buf[len-1] == '/') | ||
312 | buf[--len] = '\0'; | ||
313 | |||
314 | if (!strncmp(path, buf, len) && | ||
315 | path[len] == '/' && | ||
316 | len > max_len) { | ||
317 | max_len = len; | ||
318 | } | ||
319 | } | ||
320 | |||
321 | return max_len; | ||
322 | } | ||
323 | |||
324 | /* strip arbitrary amount of directory separators at end of path */ | 122 | /* strip arbitrary amount of directory separators at end of path */ |
325 | static inline int chomp_trailing_dir_sep(const char *path, int len) | 123 | static inline int chomp_trailing_dir_sep(const char *path, int len) |
326 | { | 124 | { |