wok-tiny annotate busybox/stuff/busybox-git-stat.u @ rev 132

Up busybox (1.28-20170822)
author Pascal Bellard <pascal.bellard@slitaz.org>
date Tue Aug 22 13:28:07 2017 +0200 (2017-08-22)
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rev   line source
pascal@132 1 Add non standard stat -m support to display file block list
pascal@132 2 Useful to patch read-only filesystems such as ISO9660, for defragmentation
pascal@132 3 tools or boot loaders
pascal@132 4 --- busybox-git/coreutils/stat.c
pascal@132 5 +++ busybox-git/coreutils/stat.c
pascal@132 6 @@ -54,6 +54,7 @@
pascal@132 7 //usage: )
pascal@132 8 //usage: "\n -L Follow links"
pascal@132 9 //usage: "\n -t Terse display"
pascal@132 10 +//usage: "\n -m Display block list"
pascal@132 11 //usage: IF_SELINUX(
pascal@132 12 //usage: "\n -Z Print security context"
pascal@132 13 //usage: )
pascal@132 14 @@ -106,13 +107,15 @@
pascal@132 15 //usage: )
pascal@132 16
pascal@132 17 #include "libbb.h"
pascal@132 18 +#include <linux/fs.h>
pascal@132 19 #include "common_bufsiz.h"
pascal@132 20
pascal@132 21 enum {
pascal@132 22 OPT_TERSE = (1 << 0),
pascal@132 23 OPT_DEREFERENCE = (1 << 1),
pascal@132 24 - OPT_FILESYS = (1 << 2) * ENABLE_FEATURE_STAT_FILESYSTEM,
pascal@132 25 - OPT_SELINUX = (1 << (2+ENABLE_FEATURE_STAT_FILESYSTEM)) * ENABLE_SELINUX,
pascal@132 26 + OPT_MAP = (1 << 2),
pascal@132 27 + OPT_FILESYS = (1 << 3) * ENABLE_FEATURE_STAT_FILESYSTEM,
pascal@132 28 + OPT_SELINUX = (1 << (3+ENABLE_FEATURE_STAT_FILESYSTEM)) * ENABLE_SELINUX,
pascal@132 29 };
pascal@132 30
pascal@132 31 #if ENABLE_FEATURE_STAT_FORMAT
pascal@132 32 @@ -463,6 +466,25 @@
pascal@132 33 }
pascal@132 34 #endif /* FEATURE_STAT_FORMAT */
pascal@132 35
pascal@132 36 +#if !ENABLE_FEATURE_STAT_FORMAT
pascal@132 37 +#define do_mapfile(filename, format) do_mapfile(filename)
pascal@132 38 +#endif
pascal@132 39 +static bool do_mapfile(const char *filename, const char *format)
pascal@132 40 +{
pascal@132 41 + int i = 0;
pascal@132 42 + int fd = xopen(filename, O_RDONLY);
pascal@132 43 +
pascal@132 44 +#if ENABLE_FEATURE_STAT_FORMAT
pascal@132 45 + (void) format;
pascal@132 46 +#endif
pascal@132 47 + while (1) {
pascal@132 48 + int blk = i++;
pascal@132 49 + if (ioctl(fd,FIBMAP,&blk) < 0 || blk == 0) break;
pascal@132 50 + printf("%u\n",blk);
pascal@132 51 + }
pascal@132 52 + return 1;
pascal@132 53 +}
pascal@132 54 +
pascal@132 55 #if ENABLE_FEATURE_STAT_FILESYSTEM
pascal@132 56 /* Stat the file system and print what we find. */
pascal@132 57 #if !ENABLE_FEATURE_STAT_FORMAT
pascal@132 58 @@ -763,7 +785,7 @@
pascal@132 59 statfunc_ptr statfunc = do_stat;
pascal@132 60
pascal@132 61 opts = getopt32(argv, "^"
pascal@132 62 - "tL"
pascal@132 63 + "tLm"
pascal@132 64 IF_FEATURE_STAT_FILESYSTEM("f")
pascal@132 65 IF_SELINUX("Z")
pascal@132 66 IF_FEATURE_STAT_FORMAT("c:")
pascal@132 67 @@ -779,6 +801,9 @@
pascal@132 68 selinux_or_die();
pascal@132 69 }
pascal@132 70 #endif
pascal@132 71 + if (opts & OPT_MAP) { /* -m */
pascal@132 72 + statfunc = do_mapfile;
pascal@132 73 + }
pascal@132 74 ok = 1;
pascal@132 75 argv += optind;
pascal@132 76 for (i = 0; argv[i]; ++i)