LXR busybox/coreutils/stat.c

   1/* vi: set sw=4 ts=4: */
   2/*
   3 * stat -- display file or file system status
   4 *
   5 * Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation.
   6 * Copyright (C) 2005 by Erik Andersen <andersen@codepoet.org>
   7 * Copyright (C) 2005 by Mike Frysinger <vapier@gentoo.org>
   8 * Copyright (C) 2006 by Yoshinori Sato <ysato@users.sourceforge.jp>
   9 *
  10 * Written by Michael Meskes
  11 * Taken from coreutils and turned into a busybox applet by Mike Frysinger
  12 *
  13 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  14 */
  15//config:config STAT
  16//config:       bool "stat (11 kb)"
  17//config:       default y
  18//config:       help
  19//config:       display file or filesystem status.
  20//config:
  21//config:config FEATURE_STAT_FORMAT
  22//config:       bool "Enable custom formats (-c)"
  23//config:       default y
  24//config:       depends on STAT
  25//config:       help
  26//config:       Without this, stat will not support the '-c format' option where
  27//config:       users can pass a custom format string for output. This adds about
  28//config:       7k to a nonstatic build on amd64.
  29//config:
  30//config:config FEATURE_STAT_FILESYSTEM
  31//config:       bool "Enable display of filesystem status (-f)"
  32//config:       default y
  33//config:       depends on STAT
  34//config:       select PLATFORM_LINUX # statfs()
  35//config:       help
  36//config:       Without this, stat will not support the '-f' option to display
  37//config:       information about filesystem status.
  38
  39//applet:IF_STAT(APPLET_NOEXEC(stat, stat, BB_DIR_BIN, BB_SUID_DROP, stat))
  40
  41//kbuild:lib-$(CONFIG_STAT) += stat.o
  42
  43//usage:#define stat_trivial_usage
  44//usage:       "[OPTIONS] FILE..."
  45//usage:#define stat_full_usage "\n\n"
  46//usage:       "Display file"
  47//usage:            IF_FEATURE_STAT_FILESYSTEM(" (default) or filesystem")
  48//usage:            " status\n"
  49//usage:        IF_FEATURE_STAT_FORMAT(
  50//usage:     "\n        -c FMT  Use the specified format"
  51//usage:        )
  52//usage:        IF_FEATURE_STAT_FILESYSTEM(
  53//usage:     "\n        -f      Display filesystem status"
  54//usage:        )
  55//usage:     "\n        -L      Follow links"
  56//usage:     "\n        -t      Terse display"
  57//usage:        IF_SELINUX(
  58//usage:     "\n        -Z      Print security context"
  59//usage:        )
  60//usage:        IF_FEATURE_STAT_FORMAT(
  61//usage:       "\n\nFMT sequences"IF_FEATURE_STAT_FILESYSTEM(" for files")":\n"
  62//usage:       " %a     Access rights in octal\n"
  63//usage:       " %A     Access rights in human readable form\n"
  64//usage:       " %b     Number of blocks allocated (see %B)\n"
  65//usage:       " %B     Size in bytes of each block reported by %b\n"
  66//usage:       " %d     Device number in decimal\n"
  67//usage:       " %D     Device number in hex\n"
  68//usage:       " %f     Raw mode in hex\n"
  69//usage:       " %F     File type\n"
  70//usage:       " %g     Group ID\n"
  71//usage:       " %G     Group name\n"
  72//usage:       " %h     Number of hard links\n"
  73//usage:       " %i     Inode number\n"
  74//usage:       " %n     File name\n"
  75//usage:       " %N     File name, with -> TARGET if symlink\n"
  76//usage:       " %o     I/O block size\n"
  77//usage:       " %s     Total size in bytes\n"
  78//usage:       " %t     Major device type in hex\n"
  79//usage:       " %T     Minor device type in hex\n"
  80//usage:       " %u     User ID\n"
  81//usage:       " %U     User name\n"
  82//usage:       " %x     Time of last access\n"
  83//usage:       " %X     Time of last access as seconds since Epoch\n"
  84//usage:       " %y     Time of last modification\n"
  85//usage:       " %Y     Time of last modification as seconds since Epoch\n"
  86//usage:       " %z     Time of last change\n"
  87//usage:       " %Z     Time of last change as seconds since Epoch\n"
  88//usage:        IF_FEATURE_STAT_FILESYSTEM(
  89//usage:       "\nFMT sequences for file systems:\n"
  90//usage:       " %a     Free blocks available to non-superuser\n"
  91//usage:       " %b     Total data blocks\n"
  92//usage:       " %c     Total file nodes\n"
  93//usage:       " %d     Free file nodes\n"
  94//usage:       " %f     Free blocks\n"
  95//usage:        IF_SELINUX(
  96//usage:       " %C     Security context in selinux\n"
  97//usage:        )
  98//usage:       " %i     File System ID in hex\n"
  99//usage:       " %l     Maximum length of filenames\n"
 100//usage:       " %n     File name\n"
 101//usage:       " %s     Block size (for faster transfer)\n"
 102//usage:       " %S     Fundamental block size (for block counts)\n"
 103//usage:       " %t     Type in hex\n"
 104//usage:       " %T     Type in human readable form"
 105//usage:        )
 106//usage:        )
 107
 108#include "libbb.h"
 109#include "common_bufsiz.h"
 110
 111enum {
 112        OPT_TERSE       = (1 << 0),
 113        OPT_DEREFERENCE = (1 << 1),
 114        OPT_FILESYS     = (1 << 2) * ENABLE_FEATURE_STAT_FILESYSTEM,
 115        OPT_SELINUX     = (1 << (2+ENABLE_FEATURE_STAT_FILESYSTEM)) * ENABLE_SELINUX,
 116};
 117
 118#if ENABLE_FEATURE_STAT_FORMAT
 119typedef bool (*statfunc_ptr)(const char *, const char *);
 120#else
 121typedef bool (*statfunc_ptr)(const char *);
 122#endif
 123
 124static const char *file_type(const struct stat *st)
 125{
 126        /* See POSIX 1003.1-2001 XCU Table 4-8 lines 17093-17107
 127         * for some of these formats.
 128         * To keep diagnostics grammatical in English, the
 129         * returned string must start with a consonant.
 130         */
 131        if (S_ISREG(st->st_mode))  return st->st_size == 0 ? "regular empty file" : "regular file";
 132        if (S_ISDIR(st->st_mode))  return "directory";
 133        if (S_ISBLK(st->st_mode))  return "block special file";
 134        if (S_ISCHR(st->st_mode))  return "character special file";
 135        if (S_ISFIFO(st->st_mode)) return "fifo";
 136        if (S_ISLNK(st->st_mode))  return "symbolic link";
 137        if (S_ISSOCK(st->st_mode)) return "socket";
 138#ifdef S_TYPEISMQ
 139        if (S_TYPEISMQ(st))        return "message queue";
 140#endif
 141#ifdef S_TYPEISSEM
 142        if (S_TYPEISSEM(st))       return "semaphore";
 143#endif
 144#ifdef S_TYPEISSHM
 145        if (S_TYPEISSHM(st))       return "shared memory object";
 146#endif
 147#ifdef S_TYPEISTMO
 148        if (S_TYPEISTMO(st))       return "typed memory object";
 149#endif
 150        return "weird file";
 151}
 152
 153static const char *human_time(time_t t)
 154{
 155        /* Old
 156        static char *str;
 157        str = ctime(&t);
 158        str[strlen(str)-1] = '\0';
 159        return str;
 160        */
 161        /* coreutils 6.3 compat: */
 162
 163        /*static char buf[sizeof("YYYY-MM-DD HH:MM:SS.000000000")] ALIGN1;*/
 164#define buf bb_common_bufsiz1
 165        setup_common_bufsiz();
 166        strcpy(strftime_YYYYMMDDHHMMSS(buf, COMMON_BUFSIZE, &t), ".000000000");
 167        return buf;
 168#undef buf
 169}
 170
 171#if ENABLE_FEATURE_STAT_FILESYSTEM
 172/* Return the type of the specified file system.
 173 * Some systems have statfvs.f_basetype[FSTYPSZ]. (AIX, HP-UX, and Solaris)
 174 * Others have statfs.f_fstypename[MFSNAMELEN]. (NetBSD 1.5.2)
 175 * Still others have neither and have to get by with f_type (Linux).
 176 */
 177static const char *human_fstype(uint32_t f_type)
 178{
 179        static const struct types {
 180                uint32_t type;
 181                const char *const fs;
 182        } humantypes[] = {
 183                { 0xADFF,     "affs" },
 184                { 0x1Cd1,     "devpts" },
 185                { 0x137D,     "ext" },
 186                { 0xEF51,     "ext2" },
 187                { 0xEF53,     "ext2/ext3" },
 188                { 0x3153464a, "jfs" },
 189                { 0x58465342, "xfs" },
 190                { 0xF995E849, "hpfs" },
 191                { 0x9660,     "isofs" },
 192                { 0x4000,     "isofs" },
 193                { 0x4004,     "isofs" },
 194                { 0x137F,     "minix" },
 195                { 0x138F,     "minix (30 char.)" },
 196                { 0x2468,     "minix v2" },
 197                { 0x2478,     "minix v2 (30 char.)" },
 198                { 0x4d44,     "msdos" },
 199                { 0x4006,     "fat" },
 200                { 0x564c,     "novell" },
 201                { 0x6969,     "nfs" },
 202                { 0x9fa0,     "proc" },
 203                { 0x517B,     "smb" },
 204                { 0x012FF7B4, "xenix" },
 205                { 0x012FF7B5, "sysv4" },
 206                { 0x012FF7B6, "sysv2" },
 207                { 0x012FF7B7, "coh" },
 208                { 0x00011954, "ufs" },
 209                { 0x012FD16D, "xia" },
 210                { 0x5346544e, "ntfs" },
 211                { 0x1021994,  "tmpfs" },
 212                { 0x52654973, "reiserfs" },
 213                { 0x28cd3d45, "cramfs" },
 214                { 0x7275,     "romfs" },
 215                { 0x858458f6, "ramfs" },
 216                { 0x73717368, "squashfs" },
 217                { 0x62656572, "sysfs" },
 218                { 0, "UNKNOWN" }
 219        };
 220
 221        int i;
 222
 223        for (i = 0; humantypes[i].type; ++i)
 224                if (humantypes[i].type == f_type)
 225                        break;
 226        return humantypes[i].fs;
 227}
 228
 229/* "man statfs" says that statfsbuf->f_fsid is a mess */
 230/* coreutils treats it as an array of ints, most significant first */
 231static unsigned long long get_f_fsid(const struct statfs *statfsbuf)
 232{
 233        const unsigned *p = (const void*) &statfsbuf->f_fsid;
 234        unsigned sz = sizeof(statfsbuf->f_fsid) / sizeof(unsigned);
 235        unsigned long long r = 0;
 236
 237        do
 238                r = (r << (sizeof(unsigned)*8)) | *p++;
 239        while (--sz > 0);
 240        return r;
 241}
 242#endif  /* FEATURE_STAT_FILESYSTEM */
 243
 244#if ENABLE_FEATURE_STAT_FORMAT
 245static void strcatc(char *str, char c)
 246{
 247        int len = strlen(str);
 248        str[len++] = c;
 249        str[len] = '\0';
 250}
 251
 252static void printfs(char *pformat, const char *msg)
 253{
 254        strcatc(pformat, 's');
 255        printf(pformat, msg);
 256}
 257
 258#if ENABLE_FEATURE_STAT_FILESYSTEM
 259/* print statfs info */
 260static void FAST_FUNC print_statfs(char *pformat, const char m,
 261                const char *const filename, const void *data
 262                IF_SELINUX(, security_context_t scontext))
 263{
 264        const struct statfs *statfsbuf = data;
 265        if (m == 'n') {
 266                printfs(pformat, filename);
 267        } else if (m == 'i') {
 268                strcat(pformat, "llx");
 269                printf(pformat, get_f_fsid(statfsbuf));
 270        } else if (m == 'l') {
 271                strcat(pformat, "lu");
 272                printf(pformat, (unsigned long) statfsbuf->f_namelen);
 273        } else if (m == 't') {
 274                strcat(pformat, "lx");
 275                printf(pformat, (unsigned long) statfsbuf->f_type); /* no equiv */
 276        } else if (m == 'T') {
 277                printfs(pformat, human_fstype(statfsbuf->f_type));
 278        } else if (m == 'b') {
 279                strcat(pformat, "llu");
 280                printf(pformat, (unsigned long long) statfsbuf->f_blocks);
 281        } else if (m == 'f') {
 282                strcat(pformat, "llu");
 283                printf(pformat, (unsigned long long) statfsbuf->f_bfree);
 284        } else if (m == 'a') {
 285                strcat(pformat, "llu");
 286                printf(pformat, (unsigned long long) statfsbuf->f_bavail);
 287        } else if (m == 's' || m == 'S') {
 288                strcat(pformat, "lu");
 289                printf(pformat, (unsigned long) statfsbuf->f_bsize);
 290        } else if (m == 'c') {
 291                strcat(pformat, "llu");
 292                printf(pformat, (unsigned long long) statfsbuf->f_files);
 293        } else if (m == 'd') {
 294                strcat(pformat, "llu");
 295                printf(pformat, (unsigned long long) statfsbuf->f_ffree);
 296# if ENABLE_SELINUX
 297        } else if (m == 'C' && (option_mask32 & OPT_SELINUX)) {
 298                printfs(pformat, scontext);
 299# endif
 300        } else {
 301                strcatc(pformat, 'c');
 302                printf(pformat, m);
 303        }
 304}
 305#endif
 306
 307/* print stat info */
 308static void FAST_FUNC print_stat(char *pformat, const char m,
 309                const char *const filename, const void *data
 310                IF_SELINUX(, security_context_t scontext))
 311{
 312#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
 313        struct stat *statbuf = (struct stat *) data;
 314        struct passwd *pw_ent;
 315        struct group *gw_ent;
 316
 317        if (m == 'n') {
 318                printfs(pformat, filename);
 319        } else if (m == 'N') {
 320                strcatc(pformat, 's');
 321                if (S_ISLNK(statbuf->st_mode)) {
 322                        char *linkname = xmalloc_readlink_or_warn(filename);
 323                        if (linkname == NULL)
 324                                return;
 325                        printf("'%s' -> '%s'", filename, linkname);
 326                        free(linkname);
 327                } else {
 328                        printf(pformat, filename);
 329                }
 330        } else if (m == 'd') {
 331                strcat(pformat, "llu");
 332                printf(pformat, (unsigned long long) statbuf->st_dev);
 333        } else if (m == 'D') {
 334                strcat(pformat, "llx");
 335                printf(pformat, (unsigned long long) statbuf->st_dev);
 336        } else if (m == 'i') {
 337                strcat(pformat, "llu");
 338                printf(pformat, (unsigned long long) statbuf->st_ino);
 339        } else if (m == 'a') {
 340                strcat(pformat, "lo");
 341                printf(pformat, (unsigned long) (statbuf->st_mode & (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)));
 342        } else if (m == 'A') {
 343                printfs(pformat, bb_mode_string(statbuf->st_mode));
 344        } else if (m == 'f') {
 345                strcat(pformat, "lx");
 346                printf(pformat, (unsigned long) statbuf->st_mode);
 347        } else if (m == 'F') {
 348                printfs(pformat, file_type(statbuf));
 349        } else if (m == 'h') {
 350                strcat(pformat, "lu");
 351                printf(pformat, (unsigned long) statbuf->st_nlink);
 352        } else if (m == 'u') {
 353                strcat(pformat, "lu");
 354                printf(pformat, (unsigned long) statbuf->st_uid);
 355        } else if (m == 'U') {
 356                pw_ent = getpwuid(statbuf->st_uid);
 357                printfs(pformat, (pw_ent != NULL) ? pw_ent->pw_name : "UNKNOWN");
 358        } else if (m == 'g') {
 359                strcat(pformat, "lu");
 360                printf(pformat, (unsigned long) statbuf->st_gid);
 361        } else if (m == 'G') {
 362                gw_ent = getgrgid(statbuf->st_gid);
 363                printfs(pformat, (gw_ent != NULL) ? gw_ent->gr_name : "UNKNOWN");
 364        } else if (m == 't') {
 365                strcat(pformat, "lx");
 366                printf(pformat, (unsigned long) major(statbuf->st_rdev));
 367        } else if (m == 'T') {
 368                strcat(pformat, "lx");
 369                printf(pformat, (unsigned long) minor(statbuf->st_rdev));
 370        } else if (m == 's') {
 371                strcat(pformat, "llu");
 372                printf(pformat, (unsigned long long) statbuf->st_size);
 373        } else if (m == 'B') {
 374                strcat(pformat, "lu");
 375                printf(pformat, (unsigned long) 512); //ST_NBLOCKSIZE
 376        } else if (m == 'b') {
 377                strcat(pformat, "llu");
 378                printf(pformat, (unsigned long long) statbuf->st_blocks);
 379        } else if (m == 'o') {
 380                strcat(pformat, "lu");
 381                printf(pformat, (unsigned long) statbuf->st_blksize);
 382        } else if (m == 'x') {
 383                printfs(pformat, human_time(statbuf->st_atime));
 384        } else if (m == 'X') {
 385                strcat(pformat, TYPE_SIGNED(time_t) ? "ld" : "lu");
 386                /* note: (unsigned long) would be wrong:
 387                 * imagine (unsigned long64)int32 */
 388                printf(pformat, (long) statbuf->st_atime);
 389        } else if (m == 'y') {
 390                printfs(pformat, human_time(statbuf->st_mtime));
 391        } else if (m == 'Y') {
 392                strcat(pformat, TYPE_SIGNED(time_t) ? "ld" : "lu");
 393                printf(pformat, (long) statbuf->st_mtime);
 394        } else if (m == 'z') {
 395                printfs(pformat, human_time(statbuf->st_ctime));
 396        } else if (m == 'Z') {
 397                strcat(pformat, TYPE_SIGNED(time_t) ? "ld" : "lu");
 398                printf(pformat, (long) statbuf->st_ctime);
 399# if ENABLE_SELINUX
 400        } else if (m == 'C' && (option_mask32 & OPT_SELINUX)) {
 401                printfs(pformat, scontext);
 402# endif
 403        } else {
 404                strcatc(pformat, 'c');
 405                printf(pformat, m);
 406        }
 407}
 408
 409static void print_it(const char *masterformat,
 410                const char *filename,
 411                void FAST_FUNC (*print_func)(char*, char, const char*, const void* IF_SELINUX(, security_context_t scontext)),
 412                const void *data
 413                IF_SELINUX(, security_context_t scontext))
 414{
 415        /* Create a working copy of the format string */
 416        char *format = xstrdup(masterformat);
 417        /* Add 2 to accommodate our conversion of the stat '%s' format string
 418         * to the printf '%llu' one.  */
 419        char *dest = xmalloc(strlen(format) + 2 + 1);
 420        char *b;
 421
 422        b = format;
 423        while (b) {
 424                /* Each iteration finds next %spec,
 425                 * prints preceding string and handles found %spec
 426                 */
 427                size_t len;
 428                char *p = strchr(b, '%');
 429                if (!p) {
 430                        /* coreutils 6.3 always prints newline at the end */
 431                        /*fputs(b, stdout);*/
 432                        puts(b);
 433                        break;
 434                }
 435
 436                /* dest = "%<modifiers>" */
 437                len = 1 + strspn(p + 1, "#-+.I 0123456789");
 438                memcpy(dest, p, len);
 439                dest[len] = '\0';
 440
 441                /* print preceding string */
 442                *p = '\0';
 443                fputs(b, stdout);
 444
 445                p += len;
 446                b = p + 1;
 447                switch (*p) {
 448                case '\0':
 449                        b = NULL;
 450                        /* fall through */
 451                case '%':
 452                        bb_putchar('%');
 453                        break;
 454                default:
 455                        /* Completes "%<modifiers>" with specifier and printfs */
 456                        print_func(dest, *p, filename, data IF_SELINUX(,scontext));
 457                        break;
 458                }
 459        }
 460
 461        free(format);
 462        free(dest);
 463}
 464#endif  /* FEATURE_STAT_FORMAT */
 465
 466#if ENABLE_FEATURE_STAT_FILESYSTEM
 467/* Stat the file system and print what we find.  */
 468#if !ENABLE_FEATURE_STAT_FORMAT
 469#define do_statfs(filename, format) do_statfs(filename)
 470#endif
 471static bool do_statfs(const char *filename, const char *format)
 472{
 473        struct statfs statfsbuf;
 474#if !ENABLE_FEATURE_STAT_FORMAT
 475        const char *format;
 476#endif
 477#if ENABLE_SELINUX
 478        security_context_t scontext = NULL;
 479
 480        if (option_mask32 & OPT_SELINUX) {
 481                if ((option_mask32 & OPT_DEREFERENCE
 482                     ? lgetfilecon(filename, &scontext)
 483                     : getfilecon(filename, &scontext)
 484                    ) < 0
 485                ) {
 486                        bb_simple_perror_msg(filename);
 487                        return 0;
 488                }
 489        }
 490#endif
 491        if (statfs(filename, &statfsbuf) != 0) {
 492                bb_perror_msg("can't read file system information for '%s'", filename);
 493                return 0;
 494        }
 495
 496#if ENABLE_FEATURE_STAT_FORMAT
 497        if (format == NULL) {
 498# if !ENABLE_SELINUX
 499                format = (option_mask32 & OPT_TERSE
 500                        ? "%n %i %l %t %s %b %f %a %c %d\n"
 501                        : "  File: \"%n\"\n"
 502                          "    ID: %-8i Namelen: %-7l Type: %T\n"
 503                          "Block size: %-10s\n"
 504                          "Blocks: Total: %-10b Free: %-10f Available: %a\n"
 505                          "Inodes: Total: %-10c Free: %d");
 506# else
 507                format = (option_mask32 & OPT_TERSE
 508                        ? (option_mask32 & OPT_SELINUX ? "%n %i %l %t %s %b %f %a %c %d %C\n":
 509                        "%n %i %l %t %s %b %f %a %c %d\n")
 510                        : (option_mask32 & OPT_SELINUX ?
 511                        "  File: \"%n\"\n"
 512                        "    ID: %-8i Namelen: %-7l Type: %T\n"
 513                        "Block size: %-10s\n"
 514                        "Blocks: Total: %-10b Free: %-10f Available: %a\n"
 515                        "Inodes: Total: %-10c Free: %d"
 516                        "  S_context: %C\n":
 517                        "  File: \"%n\"\n"
 518                        "    ID: %-8i Namelen: %-7l Type: %T\n"
 519                        "Block size: %-10s\n"
 520                        "Blocks: Total: %-10b Free: %-10f Available: %a\n"
 521                        "Inodes: Total: %-10c Free: %d\n")
 522                        );
 523# endif /* SELINUX */
 524        }
 525        print_it(format, filename, print_statfs, &statfsbuf IF_SELINUX(, scontext));
 526#else /* FEATURE_STAT_FORMAT */
 527        format = (option_mask32 & OPT_TERSE
 528                ? "%s %llx %lu "
 529                : "  File: \"%s\"\n"
 530                  "    ID: %-8llx Namelen: %-7lu ");
 531        printf(format,
 532               filename,
 533               get_f_fsid(&statfsbuf),
 534               statfsbuf.f_namelen);
 535
 536        if (option_mask32 & OPT_TERSE)
 537                printf("%lx ", (unsigned long) statfsbuf.f_type);
 538        else
 539                printf("Type: %s\n", human_fstype(statfsbuf.f_type));
 540
 541# if !ENABLE_SELINUX
 542        format = (option_mask32 & OPT_TERSE
 543                ? "%lu %llu %llu %llu %llu %llu\n"
 544                : "Block size: %-10lu\n"
 545                  "Blocks: Total: %-10llu Free: %-10llu Available: %llu\n"
 546                  "Inodes: Total: %-10llu Free: %llu\n");
 547        printf(format,
 548               (unsigned long) statfsbuf.f_bsize,
 549               (unsigned long long) statfsbuf.f_blocks,
 550               (unsigned long long) statfsbuf.f_bfree,
 551               (unsigned long long) statfsbuf.f_bavail,
 552               (unsigned long long) statfsbuf.f_files,
 553               (unsigned long long) statfsbuf.f_ffree);
 554# else
 555        format = (option_mask32 & OPT_TERSE
 556                ? (option_mask32 & OPT_SELINUX ? "%lu %llu %llu %llu %llu %llu %C\n" : "%lu %llu %llu %llu %llu %llu\n")
 557                : (option_mask32 & OPT_SELINUX
 558                        ?       "Block size: %-10lu\n"
 559                                "Blocks: Total: %-10llu Free: %-10llu Available: %llu\n"
 560                                "Inodes: Total: %-10llu Free: %llu"
 561                                "S_context: %C\n"
 562                        :       "Block size: %-10lu\n"
 563                                "Blocks: Total: %-10llu Free: %-10llu Available: %llu\n"
 564                                "Inodes: Total: %-10llu Free: %llu\n"
 565                        )
 566                );
 567        printf(format,
 568                (unsigned long) statfsbuf.f_bsize,
 569                (unsigned long long) statfsbuf.f_blocks,
 570                (unsigned long long) statfsbuf.f_bfree,
 571                (unsigned long long) statfsbuf.f_bavail,
 572                (unsigned long long) statfsbuf.f_files,
 573                (unsigned long long) statfsbuf.f_ffree,
 574                scontext);
 575
 576        if (scontext)
 577                freecon(scontext);
 578# endif
 579#endif  /* FEATURE_STAT_FORMAT */
 580        return 1;
 581}
 582#endif  /* FEATURE_STAT_FILESYSTEM */
 583
 584/* stat the file and print what we find */
 585#if !ENABLE_FEATURE_STAT_FORMAT
 586#define do_stat(filename, format) do_stat(filename)
 587#endif
 588static bool do_stat(const char *filename, const char *format)
 589{
 590        struct stat statbuf;
 591#if ENABLE_SELINUX
 592        security_context_t scontext = NULL;
 593
 594        if (option_mask32 & OPT_SELINUX) {
 595                if ((option_mask32 & OPT_DEREFERENCE
 596                     ? lgetfilecon(filename, &scontext)
 597                     : getfilecon(filename, &scontext)
 598                    ) < 0
 599                ) {
 600                        bb_simple_perror_msg(filename);
 601                        return 0;
 602                }
 603        }
 604#endif
 605        if ((option_mask32 & OPT_DEREFERENCE ? stat : lstat) (filename, &statbuf) != 0) {
 606                bb_perror_msg("can't stat '%s'", filename);
 607                return 0;
 608        }
 609
 610#if ENABLE_FEATURE_STAT_FORMAT
 611        if (format == NULL) {
 612# if !ENABLE_SELINUX
 613                if (option_mask32 & OPT_TERSE) {
 614                        format = "%n %s %b %f %u %g %D %i %h %t %T %X %Y %Z %o";
 615                } else {
 616                        if (S_ISBLK(statbuf.st_mode) || S_ISCHR(statbuf.st_mode)) {
 617                                format =
 618                                        "  File: %N\n"
 619                                        "  Size: %-10s\tBlocks: %-10b IO Block: %-6o %F\n"
 620                                        "Device: %Dh/%dd\tInode: %-10i  Links: %-5h"
 621                                        " Device type: %t,%T\n"
 622                                        "Access: (%04a/%10.10A)  Uid: (%5u/%8U)   Gid: (%5g/%8G)\n"
 623                                        "Access: %x\n" "Modify: %y\n" "Change: %z\n";
 624                        } else {
 625                                format =
 626                                        "  File: %N\n"
 627                                        "  Size: %-10s\tBlocks: %-10b IO Block: %-6o %F\n"
 628                                        "Device: %Dh/%dd\tInode: %-10i  Links: %h\n"
 629                                        "Access: (%04a/%10.10A)  Uid: (%5u/%8U)   Gid: (%5g/%8G)\n"
 630                                        "Access: %x\n" "Modify: %y\n" "Change: %z\n";
 631                        }
 632                }
 633# else
 634                if (option_mask32 & OPT_TERSE) {
 635                        format = (option_mask32 & OPT_SELINUX ?
 636                                "%n %s %b %f %u %g %D %i %h %t %T %X %Y %Z %o %C\n"
 637                                :
 638                                "%n %s %b %f %u %g %D %i %h %t %T %X %Y %Z %o\n"
 639                                );
 640                } else {
 641                        if (S_ISBLK(statbuf.st_mode) || S_ISCHR(statbuf.st_mode)) {
 642                                format = (option_mask32 & OPT_SELINUX ?
 643                                        "  File: %N\n"
 644                                        "  Size: %-10s\tBlocks: %-10b IO Block: %-6o %F\n"
 645                                        "Device: %Dh/%dd\tInode: %-10i  Links: %-5h"
 646                                        " Device type: %t,%T\n"
 647                                        "Access: (%04a/%10.10A)  Uid: (%5u/%8U)   Gid: (%5g/%8G)\n"
 648                                        "   S_Context: %C\n"
 649                                        "Access: %x\n" "Modify: %y\n" "Change: %z\n"
 650                                        :
 651                                        "  File: %N\n"
 652                                        "  Size: %-10s\tBlocks: %-10b IO Block: %-6o %F\n"
 653                                        "Device: %Dh/%dd\tInode: %-10i  Links: %-5h"
 654                                        " Device type: %t,%T\n"
 655                                        "Access: (%04a/%10.10A)  Uid: (%5u/%8U)   Gid: (%5g/%8G)\n"
 656                                        "Access: %x\n" "Modify: %y\n" "Change: %z\n"
 657                                        );
 658                        } else {
 659                                format = (option_mask32 & OPT_SELINUX ?
 660                                        "  File: %N\n"
 661                                        "  Size: %-10s\tBlocks: %-10b IO Block: %-6o %F\n"
 662                                        "Device: %Dh/%dd\tInode: %-10i  Links: %h\n"
 663                                        "Access: (%04a/%10.10A)  Uid: (%5u/%8U)   Gid: (%5g/%8G)\n"
 664                                        "S_Context: %C\n"
 665                                        "Access: %x\n" "Modify: %y\n" "Change: %z\n"
 666                                        :
 667                                        "  File: %N\n"
 668                                        "  Size: %-10s\tBlocks: %-10b IO Block: %-6o %F\n"
 669                                        "Device: %Dh/%dd\tInode: %-10i  Links: %h\n"
 670                                        "Access: (%04a/%10.10A)  Uid: (%5u/%8U)   Gid: (%5g/%8G)\n"
 671                                        "Access: %x\n" "Modify: %y\n" "Change: %z\n"
 672                                        );
 673                        }
 674                }
 675# endif
 676        }
 677        print_it(format, filename, print_stat, &statbuf IF_SELINUX(, scontext));
 678#else   /* FEATURE_STAT_FORMAT */
 679        if (option_mask32 & OPT_TERSE) {
 680                printf("%s %llu %llu %lx %lu %lu %llx %llu %lu %lx %lx %lu %lu %lu %lu"
 681                       IF_NOT_SELINUX("\n"),
 682                       filename,
 683                       (unsigned long long) statbuf.st_size,
 684                       (unsigned long long) statbuf.st_blocks,
 685                       (unsigned long) statbuf.st_mode,
 686                       (unsigned long) statbuf.st_uid,
 687                       (unsigned long) statbuf.st_gid,
 688                       (unsigned long long) statbuf.st_dev,
 689                       (unsigned long long) statbuf.st_ino,
 690                       (unsigned long) statbuf.st_nlink,
 691                       (unsigned long) major(statbuf.st_rdev),
 692                       (unsigned long) minor(statbuf.st_rdev),
 693                       (unsigned long) statbuf.st_atime,
 694                       (unsigned long) statbuf.st_mtime,
 695                       (unsigned long) statbuf.st_ctime,
 696                       (unsigned long) statbuf.st_blksize
 697                );
 698# if ENABLE_SELINUX
 699                if (option_mask32 & OPT_SELINUX)
 700                        printf(" %s\n", scontext);
 701                else
 702                        bb_putchar('\n');
 703# endif
 704        } else {
 705                char *linkname = NULL;
 706                struct passwd *pw_ent;
 707                struct group *gw_ent;
 708
 709                gw_ent = getgrgid(statbuf.st_gid);
 710                pw_ent = getpwuid(statbuf.st_uid);
 711
 712                if (S_ISLNK(statbuf.st_mode))
 713                        linkname = xmalloc_readlink_or_warn(filename);
 714                if (linkname) {
 715                        printf("  File: '%s' -> '%s'\n", filename, linkname);
 716                        free(linkname);
 717                } else {
 718                        printf("  File: '%s'\n", filename);
 719                }
 720
 721                printf("  Size: %-10llu\tBlocks: %-10llu IO Block: %-6lu %s\n"
 722                       "Device: %llxh/%llud\tInode: %-10llu  Links: %-5lu",
 723                       (unsigned long long) statbuf.st_size,
 724                       (unsigned long long) statbuf.st_blocks,
 725                       (unsigned long) statbuf.st_blksize,
 726                       file_type(&statbuf),
 727                       (unsigned long long) statbuf.st_dev,
 728                       (unsigned long long) statbuf.st_dev,
 729                       (unsigned long long) statbuf.st_ino,
 730                       (unsigned long) statbuf.st_nlink);
 731                if (S_ISBLK(statbuf.st_mode) || S_ISCHR(statbuf.st_mode))
 732                        printf(" Device type: %lx,%lx\n",
 733                               (unsigned long) major(statbuf.st_rdev),
 734                               (unsigned long) minor(statbuf.st_rdev));
 735                else
 736                        bb_putchar('\n');
 737                printf("Access: (%04lo/%10.10s)  Uid: (%5lu/%8s)   Gid: (%5lu/%8s)\n",
 738                       (unsigned long) (statbuf.st_mode & (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)),
 739                       bb_mode_string(statbuf.st_mode),
 740                       (unsigned long) statbuf.st_uid,
 741                       (pw_ent != NULL) ? pw_ent->pw_name : "UNKNOWN",
 742                       (unsigned long) statbuf.st_gid,
 743                       (gw_ent != NULL) ? gw_ent->gr_name : "UNKNOWN");
 744# if ENABLE_SELINUX
 745                if (option_mask32 & OPT_SELINUX)
 746                        printf("   S_Context: %s\n", scontext);
 747# endif
 748                printf("Access: %s\n", human_time(statbuf.st_atime));
 749                printf("Modify: %s\n", human_time(statbuf.st_mtime));
 750                printf("Change: %s\n", human_time(statbuf.st_ctime));
 751        }
 752#endif  /* FEATURE_STAT_FORMAT */
 753        return 1;
 754}
 755
 756int stat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 757int stat_main(int argc UNUSED_PARAM, char **argv)
 758{
 759        IF_FEATURE_STAT_FORMAT(char *format = NULL;)
 760        int i;
 761        int ok;
 762        statfunc_ptr statfunc = do_stat;
 763#if ENABLE_FEATURE_STAT_FILESYSTEM || ENABLE_SELINUX
 764        unsigned opts;
 765
 766        opts =
 767#endif
 768        getopt32(argv, "^"
 769                "tL"
 770                IF_FEATURE_STAT_FILESYSTEM("f")
 771                IF_SELINUX("Z")
 772                IF_FEATURE_STAT_FORMAT("c:")
 773                "\0" "-1" /* min one arg */
 774                IF_FEATURE_STAT_FORMAT(,&format)
 775        );
 776#if ENABLE_FEATURE_STAT_FILESYSTEM
 777        if (opts & OPT_FILESYS) /* -f */
 778                statfunc = do_statfs;
 779#endif
 780#if ENABLE_SELINUX
 781        if (opts & OPT_SELINUX) {
 782                selinux_or_die();
 783        }
 784#endif
 785        ok = 1;
 786        argv += optind;
 787        for (i = 0; argv[i]; ++i)
 788                ok &= statfunc(argv[i] IF_FEATURE_STAT_FORMAT(, format));
 789
 790        return (ok ? EXIT_SUCCESS : EXIT_FAILURE);
 791}
 792