wok annotate busybox/stuff/busybox-1.27-stat.u @ rev 23150

updated lxc and lxc-dev (3.1.0 -> 3.2.1)
author Hans-G?nter Theisgen
date Sun Mar 15 16:17:33 2020 +0100 (2020-03-15)
parents
children
rev   line source
pascal@19991 1 Add non standard stat -m support to display file block list
pascal@19991 2 Useful to patch read-only filesystems such as ISO9660, for defragmentation
pascal@19991 3 tools or boot loaders
pascal@19991 4 --- busybox-1.26/coreutils/stat.c
pascal@19991 5 +++ busybox-1.26/coreutils/stat.c
pascal@19991 6 @@ -54,6 +54,7 @@
pascal@19991 7 //usage: )
pascal@19991 8 //usage: "\n -L Follow links"
pascal@19991 9 //usage: "\n -t Terse display"
pascal@19991 10 +//usage: "\n -m Display block list"
pascal@19991 11 //usage: IF_SELINUX(
pascal@19991 12 //usage: "\n -Z Print security context"
pascal@19991 13 //usage: )
pascal@19991 14 @@ -106,13 +107,15 @@
pascal@19991 15 //usage: )
pascal@19991 16
pascal@19991 17 #include "libbb.h"
pascal@19991 18 +#include <linux/fs.h>
pascal@19991 19 #include "common_bufsiz.h"
pascal@19991 20
pascal@19991 21 enum {
pascal@19991 22 OPT_TERSE = (1 << 0),
pascal@19991 23 OPT_DEREFERENCE = (1 << 1),
pascal@19991 24 - OPT_FILESYS = (1 << 2) * ENABLE_FEATURE_STAT_FILESYSTEM,
pascal@19991 25 - OPT_SELINUX = (1 << (2+ENABLE_FEATURE_STAT_FILESYSTEM)) * ENABLE_SELINUX,
pascal@19991 26 + OPT_MAP = (1 << 2),
pascal@19991 27 + OPT_FILESYS = (1 << 3) * ENABLE_FEATURE_STAT_FILESYSTEM,
pascal@19991 28 + OPT_SELINUX = (1 << (3+ENABLE_FEATURE_STAT_FILESYSTEM)) * ENABLE_SELINUX,
pascal@19991 29 };
pascal@19991 30
pascal@19991 31 #if ENABLE_FEATURE_STAT_FORMAT
pascal@19991 32 @@ -463,6 +466,25 @@
pascal@19991 33 }
pascal@19991 34 #endif /* FEATURE_STAT_FORMAT */
pascal@19991 35
pascal@19991 36 +#if !ENABLE_FEATURE_STAT_FORMAT
pascal@19991 37 +#define do_mapfile(filename, format) do_mapfile(filename)
pascal@19991 38 +#endif
pascal@19991 39 +static bool do_mapfile(const char *filename, const char *format)
pascal@19991 40 +{
pascal@19991 41 + int i = 0;
pascal@19991 42 + int fd = xopen(filename, O_RDONLY);
pascal@19991 43 +
pascal@19991 44 +#if ENABLE_FEATURE_STAT_FORMAT
pascal@19991 45 + (void) format;
pascal@19991 46 +#endif
pascal@19991 47 + while (1) {
pascal@19991 48 + int blk = i++;
pascal@19991 49 + if (ioctl(fd,FIBMAP,&blk) < 0 || blk == 0) break;
pascal@19991 50 + printf("%u\n",blk);
pascal@19991 51 + }
pascal@19991 52 + return 1;
pascal@19991 53 +}
pascal@19991 54 +
pascal@19991 55 #if ENABLE_FEATURE_STAT_FILESYSTEM
pascal@19991 56 /* Stat the file system and print what we find. */
pascal@19991 57 #if !ENABLE_FEATURE_STAT_FORMAT
pascal@19991 58 @@ -763,7 +785,7 @@
pascal@19991 59 statfunc_ptr statfunc = do_stat;
pascal@19991 60
pascal@19991 61 opt_complementary = "-1"; /* min one arg */
pascal@19991 62 - opts = getopt32(argv, "tL"
pascal@19991 63 + opts = getopt32(argv, "tLm"
pascal@19991 64 IF_FEATURE_STAT_FILESYSTEM("f")
pascal@19991 65 IF_SELINUX("Z")
pascal@19991 66 IF_FEATURE_STAT_FORMAT("c:", &format)
pascal@19991 67 @@ -777,6 +799,9 @@
pascal@19991 68 selinux_or_die();
pascal@19991 69 }
pascal@19991 70 #endif
pascal@19991 71 + if (opts & OPT_MAP) { /* -m */
pascal@19991 72 + statfunc = do_mapfile;
pascal@19991 73 + }
pascal@19991 74 ok = 1;
pascal@19991 75 argv += optind;
pascal@19991 76 for (i = 0; argv[i]; ++i)