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Commit | Line | Data |
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a921a7de MY |
1 | /* |
2 | * fincore - count pages of file contents in core | |
3 | * | |
4 | * Copyright (C) 2017 Red Hat, Inc. All rights reserved. | |
5 | * Written by Masatake YAMATO <yamato@redhat.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it would be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; if not, write to the Free Software Foundation, Inc., | |
19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
20 | */ | |
21 | ||
22 | #include <sys/mman.h> | |
23 | #include <sys/stat.h> | |
24 | #include <unistd.h> | |
25 | #include <getopt.h> | |
26 | #include <stdio.h> | |
27 | #include <string.h> | |
28 | ||
29 | #include "c.h" | |
30 | #include "nls.h" | |
31 | #include "closestream.h" | |
3e37d7b7 KZ |
32 | #include "xalloc.h" |
33 | #include "strutils.h" | |
ab0a7517 | 34 | #include "blkdev.h" |
3e37d7b7 KZ |
35 | |
36 | #include "libsmartcols.h" | |
a921a7de MY |
37 | |
38 | /* For large files, mmap is called in iterative way. | |
39 | Window is the unit of vma prepared in each mmap | |
40 | calling. | |
41 | ||
42 | Window size depends on page size. | |
43 | e.g. 128MB on x86_64. ( = N_PAGES_IN_WINDOW * 4096 ). */ | |
452089fa | 44 | #define N_PAGES_IN_WINDOW ((size_t)(32 * 1024)) |
a921a7de | 45 | |
c214cbeb TW |
46 | #ifndef HAVE_CACHESTAT |
47 | ||
48 | #ifndef SYS_cachestat | |
49 | #define SYS_cachestat 451 | |
50 | #endif | |
51 | ||
52 | struct cachestat_range { | |
53 | uint64_t off; | |
54 | uint64_t len; | |
55 | }; | |
56 | ||
57 | struct cachestat { | |
58 | uint64_t nr_cache; | |
59 | uint64_t nr_dirty; | |
60 | uint64_t nr_writeback; | |
61 | uint64_t nr_evicted; | |
62 | uint64_t nr_recently_evicted; | |
63 | }; | |
64 | ||
65 | static inline int cachestat(unsigned int fd, | |
66 | const struct cachestat_range *cstat_range, | |
67 | struct cachestat *cstat, unsigned int flags) | |
68 | { | |
69 | return syscall(SYS_cachestat, fd, cstat_range, cstat, flags); | |
70 | } | |
71 | ||
72 | #endif // HAVE_CACHESTAT | |
3e37d7b7 KZ |
73 | |
74 | struct colinfo { | |
37b2b3fa | 75 | const char * const name; |
3e37d7b7 KZ |
76 | double whint; |
77 | int flags; | |
78 | const char *help; | |
e5530e33 | 79 | unsigned int pages : 1; |
3e37d7b7 KZ |
80 | }; |
81 | ||
82 | enum { | |
83 | COL_PAGES, | |
84 | COL_SIZE, | |
e4e8b57b | 85 | COL_FILE, |
c214cbeb TW |
86 | COL_RES, |
87 | COL_DIRTY_PAGES, | |
88 | COL_DIRTY, | |
89 | COL_WRITEBACK_PAGES, | |
90 | COL_WRITEBACK, | |
91 | COL_EVICTED_PAGES, | |
92 | COL_EVICTED, | |
93 | COL_RECENTLY_EVICTED_PAGES, | |
94 | COL_RECENTLY_EVICTED, | |
3e37d7b7 KZ |
95 | }; |
96 | ||
37b2b3fa | 97 | static const struct colinfo infos[] = { |
c214cbeb TW |
98 | [COL_PAGES] = { "PAGES", 1, SCOLS_FL_RIGHT, N_("file data resident in memory in pages"), 1}, |
99 | [COL_RES] = { "RES", 5, SCOLS_FL_RIGHT, N_("file data resident in memory in bytes")}, | |
100 | [COL_SIZE] = { "SIZE", 5, SCOLS_FL_RIGHT, N_("size of the file")}, | |
101 | [COL_FILE] = { "FILE", 4, 0, N_("file name")}, | |
102 | [COL_DIRTY_PAGES] = { "DIRTY_PAGES", 1, SCOLS_FL_RIGHT, N_("number of dirty pages"), 1}, | |
103 | [COL_DIRTY] = { "DIRTY", 5, SCOLS_FL_RIGHT, N_("number of dirty bytes")}, | |
104 | [COL_WRITEBACK_PAGES] = { "WRITEBACK_PAGES", 1, SCOLS_FL_RIGHT, N_("number of pages marked for writeback"), 1}, | |
105 | [COL_WRITEBACK] = { "WRITEBACK", 5, SCOLS_FL_RIGHT, N_("number of bytes marked for writeback")}, | |
106 | [COL_EVICTED_PAGES] = { "EVICTED_PAGES", 1, SCOLS_FL_RIGHT, N_("number of evicted pages"), 1}, | |
107 | [COL_EVICTED] = { "EVICTED", 5, SCOLS_FL_RIGHT, N_("number of evicted bytes")}, | |
108 | [COL_RECENTLY_EVICTED_PAGES] = { "RECENTLY_EVICTED_PAGES", 1, SCOLS_FL_RIGHT, N_("number of recently evicted pages"), 1}, | |
109 | [COL_RECENTLY_EVICTED] = { "RECENTLY_EVICTED", 5, SCOLS_FL_RIGHT, N_("number of recently evicted bytes")}, | |
3e37d7b7 KZ |
110 | }; |
111 | ||
112 | static int columns[ARRAY_SIZE(infos) * 2] = {-1}; | |
113 | static size_t ncolumns; | |
114 | ||
115 | struct fincore_control { | |
452089fa | 116 | const size_t pagesize; |
3e37d7b7 KZ |
117 | |
118 | struct libscols_table *tb; /* output */ | |
119 | ||
3f91dd88 | 120 | unsigned int bytes : 1, |
9b48766f KZ |
121 | noheadings : 1, |
122 | raw : 1, | |
123 | json : 1; | |
c214cbeb TW |
124 | |
125 | }; | |
126 | ||
127 | struct fincore_state { | |
128 | const char * const name; | |
129 | long long unsigned int file_size; | |
130 | ||
131 | struct cachestat cstat; | |
132 | struct { | |
133 | unsigned int dirty : 1, | |
134 | writeback : 1, | |
135 | evicted : 1, | |
136 | recently_evicted : 1; | |
137 | } cstat_fields; | |
3e37d7b7 KZ |
138 | }; |
139 | ||
a921a7de | 140 | |
3e37d7b7 KZ |
141 | static int column_name_to_id(const char *name, size_t namesz) |
142 | { | |
143 | size_t i; | |
144 | ||
145 | for (i = 0; i < ARRAY_SIZE(infos); i++) { | |
146 | const char *cn = infos[i].name; | |
147 | ||
148 | if (!strncasecmp(name, cn, namesz) && !*(cn + namesz)) | |
149 | return i; | |
150 | } | |
151 | warnx(_("unknown column: %s"), name); | |
152 | return -1; | |
153 | } | |
154 | ||
155 | static int get_column_id(int num) | |
a921a7de | 156 | { |
3e37d7b7 KZ |
157 | assert(num >= 0); |
158 | assert((size_t) num < ncolumns); | |
159 | assert(columns[num] < (int) ARRAY_SIZE(infos)); | |
160 | return columns[num]; | |
a921a7de MY |
161 | } |
162 | ||
3e37d7b7 | 163 | static const struct colinfo *get_column_info(int num) |
a921a7de | 164 | { |
3e37d7b7 | 165 | return &infos[ get_column_id(num) ]; |
a921a7de MY |
166 | } |
167 | ||
c214cbeb TW |
168 | static int get_cstat_value(const struct fincore_state *st, int column_id, |
169 | uint64_t *value) | |
170 | { | |
171 | switch(column_id) { | |
172 | case COL_PAGES: | |
173 | case COL_RES: | |
174 | *value = st->cstat.nr_cache; | |
175 | return 1; | |
176 | case COL_DIRTY_PAGES: | |
177 | case COL_DIRTY: | |
178 | if (!st->cstat_fields.dirty) | |
179 | break; | |
180 | *value = st->cstat.nr_dirty; | |
181 | return 1; | |
182 | case COL_WRITEBACK_PAGES: | |
183 | case COL_WRITEBACK: | |
184 | if (!st->cstat_fields.writeback) | |
185 | *value = st->cstat.nr_writeback; | |
186 | return 1; | |
187 | case COL_EVICTED_PAGES: | |
188 | case COL_EVICTED: | |
189 | if (!st->cstat_fields.evicted) | |
190 | break; | |
191 | *value = st->cstat.nr_evicted; | |
192 | return 1; | |
193 | case COL_RECENTLY_EVICTED_PAGES: | |
194 | case COL_RECENTLY_EVICTED: | |
195 | if (!st->cstat_fields.recently_evicted) | |
196 | break; | |
197 | *value = st->cstat.nr_recently_evicted; | |
198 | return 1; | |
199 | default: | |
200 | assert(0); | |
201 | } | |
202 | return 0; | |
203 | } | |
204 | ||
3e37d7b7 | 205 | static int add_output_data(struct fincore_control *ctl, |
c214cbeb | 206 | struct fincore_state *st) |
3e37d7b7 KZ |
207 | { |
208 | size_t i; | |
209 | char *tmp; | |
c214cbeb | 210 | uint64_t value = 0; |
3e37d7b7 KZ |
211 | struct libscols_line *ln; |
212 | ||
213 | assert(ctl); | |
214 | assert(ctl->tb); | |
215 | ||
216 | ln = scols_table_new_line(ctl->tb, NULL); | |
217 | if (!ln) | |
780ce22c | 218 | err(EXIT_FAILURE, _("failed to allocate output line")); |
3e37d7b7 KZ |
219 | |
220 | for (i = 0; i < ncolumns; i++) { | |
b7ebf49c | 221 | int rc = 0; |
e5530e33 TW |
222 | int column_id = get_column_id(i); |
223 | int format_value = 0; | |
b7ebf49c | 224 | |
e5530e33 | 225 | switch(column_id) { |
3e37d7b7 | 226 | case COL_FILE: |
c214cbeb | 227 | rc = scols_line_set_data(ln, i, st->name); |
e4e8b57b | 228 | break; |
3e37d7b7 KZ |
229 | case COL_SIZE: |
230 | if (ctl->bytes) | |
c214cbeb | 231 | xasprintf(&tmp, "%jd", (intmax_t) st->file_size); |
3e37d7b7 | 232 | else |
c214cbeb | 233 | tmp = size_to_human_string(SIZE_SUFFIX_1LETTER, st->file_size); |
b7ebf49c | 234 | rc = scols_line_refer_data(ln, i, tmp); |
3e37d7b7 | 235 | break; |
c214cbeb TW |
236 | case COL_PAGES: |
237 | case COL_RES: | |
238 | case COL_DIRTY_PAGES: | |
239 | case COL_DIRTY: | |
240 | case COL_WRITEBACK_PAGES: | |
241 | case COL_WRITEBACK: | |
242 | case COL_EVICTED: | |
243 | case COL_EVICTED_PAGES: | |
244 | case COL_RECENTLY_EVICTED: | |
245 | case COL_RECENTLY_EVICTED_PAGES: | |
246 | format_value = get_cstat_value(st, column_id, &value); | |
247 | break; | |
3e37d7b7 KZ |
248 | default: |
249 | return -EINVAL; | |
250 | } | |
b7ebf49c | 251 | |
e5530e33 | 252 | if (format_value) { |
c214cbeb | 253 | if (get_column_info(i)->pages) { |
e5530e33 TW |
254 | xasprintf(&tmp, "%ju", (uintmax_t) value); |
255 | } else { | |
256 | value *= ctl->pagesize; | |
257 | if (ctl->bytes) | |
258 | xasprintf(&tmp, "%ju", (uintmax_t) value); | |
259 | else | |
260 | tmp = size_to_human_string(SIZE_SUFFIX_1LETTER, value); | |
261 | } | |
262 | rc = scols_line_refer_data(ln, i, tmp); | |
263 | } | |
264 | ||
b7ebf49c KZ |
265 | if (rc) |
266 | err(EXIT_FAILURE, _("failed to add output data")); | |
3e37d7b7 KZ |
267 | } |
268 | ||
269 | return 0; | |
270 | } | |
271 | ||
272 | static int do_mincore(struct fincore_control *ctl, | |
273 | void *window, const size_t len, | |
c214cbeb | 274 | struct fincore_state *st) |
a921a7de MY |
275 | { |
276 | static unsigned char vec[N_PAGES_IN_WINDOW]; | |
3e37d7b7 | 277 | int n = (len / ctl->pagesize) + ((len % ctl->pagesize)? 1: 0); |
a921a7de MY |
278 | |
279 | if (mincore (window, len, vec) < 0) { | |
c214cbeb | 280 | warn(_("failed to do mincore: %s"), st->name); |
b57fe43c | 281 | return -errno; |
a921a7de MY |
282 | } |
283 | ||
284 | while (n > 0) | |
285 | { | |
286 | if (vec[--n] & 0x1) | |
287 | { | |
288 | vec[n] = 0; | |
c214cbeb | 289 | st->cstat.nr_cache++; |
a921a7de MY |
290 | } |
291 | } | |
292 | ||
b57fe43c | 293 | return 0; |
a921a7de MY |
294 | } |
295 | ||
c214cbeb | 296 | static int mincore_fd (struct fincore_control *ctl, |
3e37d7b7 | 297 | int fd, |
c214cbeb | 298 | struct fincore_state *st) |
a921a7de | 299 | { |
452089fa | 300 | size_t window_size = N_PAGES_IN_WINDOW * ctl->pagesize; |
c214cbeb | 301 | long long unsigned int file_offset, len; |
b57fe43c | 302 | int rc = 0; |
a921a7de | 303 | |
c214cbeb | 304 | for (file_offset = 0; file_offset < st->file_size; file_offset += len) { |
57940872 | 305 | void *window = NULL; |
a921a7de | 306 | |
c214cbeb TW |
307 | len = st->file_size - file_offset; |
308 | if (len >= window_size) | |
a921a7de MY |
309 | len = window_size; |
310 | ||
cf397444 TW |
311 | /* PROT_NONE is enough for Linux, but qemu-user wants PROT_READ */ |
312 | window = mmap(window, len, PROT_READ, MAP_PRIVATE, fd, file_offset); | |
a921a7de | 313 | if (window == MAP_FAILED) { |
374cb543 | 314 | rc = -EINVAL; |
c214cbeb | 315 | warn(_("failed to do mmap: %s"), st->name); |
a921a7de MY |
316 | break; |
317 | } | |
318 | ||
c214cbeb | 319 | rc = do_mincore(ctl, window, len, st); |
b57fe43c KZ |
320 | if (rc) |
321 | break; | |
a921a7de MY |
322 | |
323 | munmap (window, len); | |
324 | } | |
325 | ||
b57fe43c | 326 | return rc; |
a921a7de MY |
327 | } |
328 | ||
c214cbeb TW |
329 | static int fincore_fd (struct fincore_control *ctl, |
330 | int fd, | |
331 | struct fincore_state *st) | |
332 | { | |
333 | int rc; | |
334 | const struct cachestat_range cstat_range = { 0 }; | |
335 | ||
336 | rc = cachestat(fd, &cstat_range, &st->cstat, 0); | |
337 | if (!rc) { | |
338 | st->cstat_fields.dirty = 1; | |
339 | st->cstat_fields.writeback = 1; | |
340 | st->cstat_fields.evicted = 1; | |
341 | st->cstat_fields.recently_evicted = 1; | |
342 | return 0; | |
343 | } | |
344 | ||
345 | if (errno != ENOSYS) | |
346 | warn(_("failed to do cachestat: %s"), st->name); | |
347 | ||
348 | return mincore_fd(ctl, fd, st); | |
349 | } | |
350 | ||
3e37d7b7 KZ |
351 | /* |
352 | * Returns: <0 on error, 0 success, 1 ignore. | |
353 | */ | |
354 | static int fincore_name(struct fincore_control *ctl, | |
c214cbeb | 355 | struct fincore_state *st) |
a921a7de MY |
356 | { |
357 | int fd; | |
b57fe43c | 358 | int rc = 0; |
ab0a7517 | 359 | struct stat sb; |
a921a7de | 360 | |
c214cbeb TW |
361 | if ((fd = open (st->name, O_RDONLY)) < 0) { |
362 | warn(_("failed to open: %s"), st->name); | |
cff1c113 | 363 | return -errno; |
a921a7de MY |
364 | } |
365 | ||
ab0a7517 | 366 | if (fstat (fd, &sb) < 0) { |
c214cbeb | 367 | warn(_("failed to do fstat: %s"), st->name); |
b9dc8d07 | 368 | close (fd); |
b57fe43c | 369 | return -errno; |
a921a7de | 370 | } |
c214cbeb | 371 | st->file_size = sb.st_size; |
a921a7de | 372 | |
5a02eb13 | 373 | if (S_ISBLK(sb.st_mode)) { |
c214cbeb | 374 | rc = blkdev_get_size(fd, &st->file_size); |
5a02eb13 | 375 | if (rc) |
c214cbeb | 376 | warn(_("failed ioctl to get size: %s"), st->name); |
5a02eb13 | 377 | } else if (S_ISREG(sb.st_mode)) { |
c214cbeb | 378 | st->file_size = sb.st_size; |
ab0a7517 JU |
379 | } else { |
380 | rc = 1; /* ignore things like symlinks | |
381 | * and directories*/ | |
382 | } | |
a921a7de | 383 | |
c214cbeb TW |
384 | if (!rc) |
385 | rc = fincore_fd(ctl, fd, st); | |
5a02eb13 | 386 | |
a921a7de | 387 | close (fd); |
b57fe43c | 388 | return rc; |
a921a7de MY |
389 | } |
390 | ||
86be6a32 | 391 | static void __attribute__((__noreturn__)) usage(void) |
3f91dd88 | 392 | { |
86be6a32 | 393 | FILE *out = stdout; |
c5cb5412 KZ |
394 | size_t i; |
395 | ||
3f91dd88 KZ |
396 | fputs(USAGE_HEADER, out); |
397 | fprintf(out, _(" %s [options] file...\n"), program_invocation_short_name); | |
398 | ||
399 | fputs(USAGE_OPTIONS, out); | |
9b48766f | 400 | fputs(_(" -J, --json use JSON output format\n"), out); |
c5cb5412 KZ |
401 | fputs(_(" -b, --bytes print sizes in bytes rather than in human readable format\n"), out); |
402 | fputs(_(" -n, --noheadings don't print headings\n"), out); | |
403 | fputs(_(" -o, --output <list> output columns\n"), out); | |
1f583cb9 | 404 | fputs(_(" --output-all output all columns\n"), out); |
9b48766f | 405 | fputs(_(" -r, --raw use raw output format\n"), out); |
3f91dd88 KZ |
406 | |
407 | fputs(USAGE_SEPARATOR, out); | |
bad4c729 | 408 | fprintf(out, USAGE_HELP_OPTIONS(23)); |
3f91dd88 | 409 | |
38b8eac6 | 410 | fputs(USAGE_COLUMNS, out); |
c5cb5412 KZ |
411 | |
412 | for (i = 0; i < ARRAY_SIZE(infos); i++) | |
d9d53b89 | 413 | fprintf(out, " %22s %s\n", infos[i].name, _(infos[i].help)); |
c5cb5412 | 414 | |
bad4c729 | 415 | fprintf(out, USAGE_MAN_TAIL("fincore(1)")); |
3f91dd88 | 416 | |
86be6a32 | 417 | exit(EXIT_SUCCESS); |
3f91dd88 KZ |
418 | } |
419 | ||
a921a7de MY |
420 | int main(int argc, char ** argv) |
421 | { | |
422 | int c; | |
3e37d7b7 | 423 | size_t i; |
b57fe43c | 424 | int rc = EXIT_SUCCESS; |
c5cb5412 | 425 | char *outarg = NULL; |
a921a7de | 426 | |
3e37d7b7 | 427 | struct fincore_control ctl = { |
c5cb5412 | 428 | .pagesize = getpagesize() |
3e37d7b7 KZ |
429 | }; |
430 | ||
1f583cb9 TW |
431 | enum { |
432 | OPT_OUTPUT_ALL = CHAR_MAX + 1 | |
433 | }; | |
a921a7de | 434 | static const struct option longopts[] = { |
3f91dd88 KZ |
435 | { "bytes", no_argument, NULL, 'b' }, |
436 | { "noheadings", no_argument, NULL, 'n' }, | |
c5cb5412 | 437 | { "output", required_argument, NULL, 'o' }, |
1f583cb9 | 438 | { "output-all", no_argument, NULL, OPT_OUTPUT_ALL }, |
a921a7de MY |
439 | { "version", no_argument, NULL, 'V' }, |
440 | { "help", no_argument, NULL, 'h' }, | |
9b48766f KZ |
441 | { "json", no_argument, NULL, 'J' }, |
442 | { "raw", no_argument, NULL, 'r' }, | |
a921a7de MY |
443 | { NULL, 0, NULL, 0 }, |
444 | }; | |
445 | ||
446 | setlocale(LC_ALL, ""); | |
447 | bindtextdomain(PACKAGE, LOCALEDIR); | |
448 | textdomain(PACKAGE); | |
2c308875 | 449 | close_stdout_atexit(); |
a921a7de | 450 | |
9b48766f | 451 | while ((c = getopt_long (argc, argv, "bno:JrVh", longopts, NULL)) != -1) { |
a921a7de | 452 | switch (c) { |
3f91dd88 KZ |
453 | case 'b': |
454 | ctl.bytes = 1; | |
455 | break; | |
456 | case 'n': | |
457 | ctl.noheadings = 1; | |
458 | break; | |
c5cb5412 KZ |
459 | case 'o': |
460 | outarg = optarg; | |
461 | break; | |
1f583cb9 TW |
462 | case OPT_OUTPUT_ALL: |
463 | for (ncolumns = 0; ncolumns < ARRAY_SIZE(infos); ncolumns++) | |
464 | columns[ncolumns] = ncolumns; | |
465 | break; | |
9b48766f KZ |
466 | case 'J': |
467 | ctl.json = 1; | |
468 | break; | |
469 | case 'r': | |
470 | ctl.raw = 1; | |
471 | break; | |
a921a7de | 472 | case 'V': |
2c308875 | 473 | print_version(EXIT_SUCCESS); |
a921a7de | 474 | case 'h': |
86be6a32 | 475 | usage(); |
a921a7de MY |
476 | default: |
477 | errtryhelp(EXIT_FAILURE); | |
478 | } | |
479 | } | |
480 | ||
481 | if (optind == argc) { | |
b57fe43c KZ |
482 | warnx(_("no file specified")); |
483 | errtryhelp(EXIT_FAILURE); | |
a921a7de MY |
484 | } |
485 | ||
3e37d7b7 | 486 | if (!ncolumns) { |
e4e8b57b | 487 | columns[ncolumns++] = COL_RES; |
3e37d7b7 KZ |
488 | columns[ncolumns++] = COL_PAGES; |
489 | columns[ncolumns++] = COL_SIZE; | |
490 | columns[ncolumns++] = COL_FILE; | |
491 | } | |
492 | ||
c5cb5412 KZ |
493 | if (outarg && string_add_to_idarray(outarg, columns, ARRAY_SIZE(columns), |
494 | &ncolumns, column_name_to_id) < 0) | |
495 | return EXIT_FAILURE; | |
496 | ||
3e37d7b7 KZ |
497 | scols_init_debug(0); |
498 | ctl.tb = scols_new_table(); | |
499 | if (!ctl.tb) | |
780ce22c | 500 | err(EXIT_FAILURE, _("failed to allocate output table")); |
3e37d7b7 | 501 | |
3f91dd88 | 502 | scols_table_enable_noheadings(ctl.tb, ctl.noheadings); |
9b48766f KZ |
503 | scols_table_enable_raw(ctl.tb, ctl.raw); |
504 | scols_table_enable_json(ctl.tb, ctl.json); | |
505 | if (ctl.json) | |
506 | scols_table_set_name(ctl.tb, "fincore"); | |
3f91dd88 | 507 | |
3e37d7b7 KZ |
508 | for (i = 0; i < ncolumns; i++) { |
509 | const struct colinfo *col = get_column_info(i); | |
8945d9dc | 510 | struct libscols_column *cl; |
a921a7de | 511 | |
8945d9dc KZ |
512 | cl = scols_table_new_column(ctl.tb, col->name, col->whint, col->flags); |
513 | if (!cl) | |
780ce22c | 514 | err(EXIT_FAILURE, _("failed to allocate output column")); |
8945d9dc KZ |
515 | |
516 | if (ctl.json) { | |
517 | int id = get_column_id(i); | |
518 | ||
519 | switch (id) { | |
520 | case COL_FILE: | |
521 | scols_column_set_json_type(cl, SCOLS_JSON_STRING); | |
522 | break; | |
523 | case COL_SIZE: | |
524 | case COL_RES: | |
525 | if (!ctl.bytes) | |
526 | break; | |
527 | /* fallthrough */ | |
528 | default: | |
529 | scols_column_set_json_type(cl, SCOLS_JSON_NUMBER); | |
530 | break; | |
531 | } | |
532 | } | |
3e37d7b7 | 533 | } |
b57fe43c | 534 | |
a921a7de | 535 | for(; optind < argc; optind++) { |
c214cbeb TW |
536 | struct fincore_state st = { |
537 | .name = argv[optind], | |
538 | }; | |
a921a7de | 539 | |
c214cbeb | 540 | switch (fincore_name(&ctl, &st)) { |
3e37d7b7 | 541 | case 0: |
c214cbeb | 542 | add_output_data(&ctl, &st); |
3e37d7b7 KZ |
543 | break; |
544 | case 1: | |
545 | break; /* ignore */ | |
546 | default: | |
b57fe43c | 547 | rc = EXIT_FAILURE; |
3e37d7b7 | 548 | break; |
a921a7de MY |
549 | } |
550 | } | |
551 | ||
3e37d7b7 KZ |
552 | scols_print_table(ctl.tb); |
553 | scols_unref_table(ctl.tb); | |
554 | ||
b57fe43c | 555 | return rc; |
a921a7de | 556 | } |