/
stat.c
1133 lines (1062 loc) · 31.9 KB
/
stat.c
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/* stat.c -- display file or file system status
Copyright (C) 2001-2010 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Written by Michael Meskes. */
#include <config.h>
/* Keep this conditional in sync with the similar conditional in
../m4/stat-prog.m4. */
#if (STAT_STATVFS \
&& (HAVE_STRUCT_STATVFS_F_BASETYPE || HAVE_STRUCT_STATVFS_F_FSTYPENAME \
|| (! HAVE_STRUCT_STATFS_F_FSTYPENAME && HAVE_STRUCT_STATVFS_F_TYPE)))
# define USE_STATVFS 1
#else
# define USE_STATVFS 0
#endif
#include <stddef.h>
#include <stdio.h>
#include <sys/types.h>
#include <pwd.h>
#include <grp.h>
#if USE_STATVFS
# include <sys/statvfs.h>
#elif HAVE_SYS_VFS_H
# include <sys/vfs.h>
#elif HAVE_SYS_MOUNT_H && HAVE_SYS_PARAM_H
/* NOTE: freebsd5.0 needs sys/param.h and sys/mount.h for statfs.
It does have statvfs.h, but shouldn't use it, since it doesn't
HAVE_STRUCT_STATVFS_F_BASETYPE. So find a clean way to fix it. */
/* NetBSD 1.5.2 needs these, for the declaration of struct statfs. */
# include <sys/param.h>
# include <sys/mount.h>
# if HAVE_NETINET_IN_H && HAVE_NFS_NFS_CLNT_H && HAVE_NFS_VFS_H
/* Ultrix 4.4 needs these for the declaration of struct statfs. */
# include <netinet/in.h>
# include <nfs/nfs_clnt.h>
# include <nfs/vfs.h>
# endif
#elif HAVE_OS_H /* BeOS */
# include <fs_info.h>
#endif
#include <selinux/selinux.h>
#include "system.h"
#include "error.h"
#include "filemode.h"
#include "file-type.h"
#include "fs.h"
#include "getopt.h"
#include "quote.h"
#include "quotearg.h"
#include "stat-time.h"
#include "strftime.h"
#include "areadlink.h"
#define alignof(type) offsetof (struct { char c; type x; }, x)
#if USE_STATVFS
# define STRUCT_STATVFS struct statvfs
# define STRUCT_STATXFS_F_FSID_IS_INTEGER STRUCT_STATVFS_F_FSID_IS_INTEGER
# define HAVE_STRUCT_STATXFS_F_TYPE HAVE_STRUCT_STATVFS_F_TYPE
# if HAVE_STRUCT_STATVFS_F_NAMEMAX
# define SB_F_NAMEMAX(S) ((S)->f_namemax)
# endif
# define STATFS statvfs
# define STATFS_FRSIZE(S) ((S)->f_frsize)
#else
# define HAVE_STRUCT_STATXFS_F_TYPE HAVE_STRUCT_STATFS_F_TYPE
# if HAVE_STRUCT_STATFS_F_NAMELEN
# define SB_F_NAMEMAX(S) ((S)->f_namelen)
# endif
# define STATFS statfs
# if HAVE_OS_H /* BeOS */
/* BeOS has a statvfs function, but it does not return sensible values
for f_files, f_ffree and f_favail, and lacks f_type, f_basetype and
f_fstypename. Use 'struct fs_info' instead. */
static int
statfs (char const *filename, struct fs_info *buf)
{
dev_t device = dev_for_path (filename);
if (device < 0)
{
errno = (device == B_ENTRY_NOT_FOUND ? ENOENT
: device == B_BAD_VALUE ? EINVAL
: device == B_NAME_TOO_LONG ? ENAMETOOLONG
: device == B_NO_MEMORY ? ENOMEM
: device == B_FILE_ERROR ? EIO
: 0);
return -1;
}
/* If successful, buf->dev will be == device. */
return fs_stat_dev (device, buf);
}
# define f_fsid dev
# define f_blocks total_blocks
# define f_bfree free_blocks
# define f_bavail free_blocks
# define f_bsize io_size
# define f_files total_nodes
# define f_ffree free_nodes
# define STRUCT_STATVFS struct fs_info
# define STRUCT_STATXFS_F_FSID_IS_INTEGER true
# define STATFS_FRSIZE(S) ((S)->block_size)
# else
# define STRUCT_STATVFS struct statfs
# define STRUCT_STATXFS_F_FSID_IS_INTEGER STRUCT_STATFS_F_FSID_IS_INTEGER
# define STATFS_FRSIZE(S) 0
# endif
#endif
#ifdef SB_F_NAMEMAX
# define OUT_NAMEMAX out_uint
#else
/* NetBSD 1.5.2 has neither f_namemax nor f_namelen. */
# define SB_F_NAMEMAX(S) "*"
# define OUT_NAMEMAX out_string
#endif
#if HAVE_STRUCT_STATVFS_F_BASETYPE
# define STATXFS_FILE_SYSTEM_TYPE_MEMBER_NAME f_basetype
#else
# if HAVE_STRUCT_STATVFS_F_FSTYPENAME || HAVE_STRUCT_STATFS_F_FSTYPENAME
# define STATXFS_FILE_SYSTEM_TYPE_MEMBER_NAME f_fstypename
# elif HAVE_OS_H /* BeOS */
# define STATXFS_FILE_SYSTEM_TYPE_MEMBER_NAME fsh_name
# endif
#endif
/* FIXME: these are used by printf.c, too */
#define isodigit(c) ('0' <= (c) && (c) <= '7')
#define octtobin(c) ((c) - '0')
#define hextobin(c) ((c) >= 'a' && (c) <= 'f' ? (c) - 'a' + 10 : \
(c) >= 'A' && (c) <= 'F' ? (c) - 'A' + 10 : (c) - '0')
#define PROGRAM_NAME "stat"
#define AUTHORS proper_name ("Michael Meskes")
enum
{
PRINTF_OPTION = CHAR_MAX + 1
};
static struct option const long_options[] =
{
{"context", no_argument, 0, 'Z'},
{"dereference", no_argument, NULL, 'L'},
{"file-system", no_argument, NULL, 'f'},
{"format", required_argument, NULL, 'c'},
{"printf", required_argument, NULL, PRINTF_OPTION},
{"terse", no_argument, NULL, 't'},
{GETOPT_HELP_OPTION_DECL},
{GETOPT_VERSION_OPTION_DECL},
{NULL, 0, NULL, 0}
};
/* Whether to follow symbolic links; True for --dereference (-L). */
static bool follow_links;
/* Whether to interpret backslash-escape sequences.
True for --printf=FMT, not for --format=FMT (-c). */
static bool interpret_backslash_escapes;
/* The trailing delimiter string:
"" for --printf=FMT, "\n" for --format=FMT (-c). */
static char const *trailing_delim = "";
/* Return the type of the specified file system.
Some systems have statfvs.f_basetype[FSTYPSZ] (AIX, HP-UX, and Solaris).
Others have statvfs.f_fstypename[_VFS_NAMELEN] (NetBSD 3.0).
Others have statfs.f_fstypename[MFSNAMELEN] (NetBSD 1.5.2).
Still others have neither and have to get by with f_type (GNU/Linux).
But f_type may only exist in statfs (Cygwin). */
static char const *
human_fstype (STRUCT_STATVFS const *statfsbuf)
{
#ifdef STATXFS_FILE_SYSTEM_TYPE_MEMBER_NAME
return statfsbuf->STATXFS_FILE_SYSTEM_TYPE_MEMBER_NAME;
#else
switch (statfsbuf->f_type)
{
# if defined __linux__
/* Compare with what's in libc:
f=/a/libc/sysdeps/unix/sysv/linux/linux_fsinfo.h
sed -n '/ADFS_SUPER_MAGIC/,/SYSFS_MAGIC/p' $f \
| perl -n -e '/#define (.*?)_(?:SUPER_)MAGIC\s+0x(\S+)/' \
-e 'and print "case S_MAGIC_$1: /\* 0x" . uc($2) . " *\/\n"' \
| sort > sym_libc
perl -ne '/^\s+(case S_MAGIC_.*?): \/\* 0x(\S+) \*\//' \
-e 'and do { $v=uc$2; print "$1: /\* 0x$v *\/\n"}' stat.c \
| sort > sym_stat
diff -u sym_stat sym_libc
*/
/* Also compare with the list in "man 2 statfs" using the
fs-magic-compare make target. */
/* IMPORTANT NOTE: Each of the following `case S_MAGIC_...:'
statements must be followed by a hexadecimal constant in
a comment. The S_MAGIC_... name and constant are automatically
combined to produce the #define directives in fs.h. */
case S_MAGIC_ADFS: /* 0xADF5 */
return "adfs";
case S_MAGIC_AFFS: /* 0xADFF */
return "affs";
case S_MAGIC_AFS: /* 0x5346414F */
return "afs";
case S_MAGIC_ANON_INODE_FS: /* 0x09041934 */
return "anon-inode FS";
case S_MAGIC_AUTOFS: /* 0x0187 */
return "autofs";
case S_MAGIC_BEFS: /* 0x42465331 */
return "befs";
case S_MAGIC_BFS: /* 0x1BADFACE */
return "bfs";
case S_MAGIC_BINFMT_MISC: /* 0x42494E4D */
return "binfmt_misc";
case S_MAGIC_BTRFS: /* 0x9123683E */
return "btrfs";
case S_MAGIC_CGROUP: /* 0x0027E0EB */
return "cgroupfs";
case S_MAGIC_CIFS: /* 0xFF534D42 */
return "cifs";
case S_MAGIC_CODA: /* 0x73757245 */
return "coda";
case S_MAGIC_COH: /* 0x012FF7B7 */
return "coh";
case S_MAGIC_CRAMFS: /* 0x28CD3D45 */
return "cramfs";
case S_MAGIC_CRAMFS_WEND: /* 0x453DCD28 */
return "cramfs-wend";
case S_MAGIC_DEBUGFS: /* 0x64626720 */
return "debugfs";
case S_MAGIC_DEVFS: /* 0x1373 */
return "devfs";
case S_MAGIC_DEVPTS: /* 0x1CD1 */
return "devpts";
case S_MAGIC_EFS: /* 0x00414A53 */
return "efs";
case S_MAGIC_EXT: /* 0x137D */
return "ext";
case S_MAGIC_EXT2: /* 0xEF53 */
return "ext2/ext3";
case S_MAGIC_EXT2_OLD: /* 0xEF51 */
return "ext2";
case S_MAGIC_FAT: /* 0x4006 */
return "fat";
case S_MAGIC_FUSEBLK: /* 0x65735546 */
return "fuseblk";
case S_MAGIC_FUSECTL: /* 0x65735543 */
return "fusectl";
case S_MAGIC_FUTEXFS: /* 0x0BAD1DEA */
return "futexfs";
case S_MAGIC_GFS: /* 0x1161970 */
return "gfs/gfs2";
case S_MAGIC_HFS: /* 0x4244 */
return "hfs";
case S_MAGIC_HPFS: /* 0xF995E849 */
return "hpfs";
case S_MAGIC_HUGETLBFS: /* 0x958458F6 */
return "hugetlbfs";
case S_MAGIC_INOTIFYFS: /* 0x2BAD1DEA */
return "inotifyfs";
case S_MAGIC_ISOFS: /* 0x9660 */
return "isofs";
case S_MAGIC_ISOFS_R_WIN: /* 0x4004 */
return "isofs";
case S_MAGIC_ISOFS_WIN: /* 0x4000 */
return "isofs";
case S_MAGIC_JFFS: /* 0x07C0 */
return "jffs";
case S_MAGIC_JFFS2: /* 0x72B6 */
return "jffs2";
case S_MAGIC_JFS: /* 0x3153464A */
return "jfs";
case S_MAGIC_KAFS: /* 0x6B414653 */
return "k-afs";
case S_MAGIC_LUSTRE: /* 0x0BD00BD0 */
return "lustre";
case S_MAGIC_MINIX: /* 0x137F */
return "minix";
case S_MAGIC_MINIX_30: /* 0x138F */
return "minix (30 char.)";
case S_MAGIC_MINIX_V2: /* 0x2468 */
return "minix v2";
case S_MAGIC_MINIX_V2_30: /* 0x2478 */
return "minix v2 (30 char.)";
case S_MAGIC_MINIX_V3: /* 0x4D5A */
return "minix3";
case S_MAGIC_MSDOS: /* 0x4D44 */
return "msdos";
case S_MAGIC_NCP: /* 0x564C */
return "novell";
case S_MAGIC_NFS: /* 0x6969 */
return "nfs";
case S_MAGIC_NFSD: /* 0x6E667364 */
return "nfsd";
case S_MAGIC_NILFS: /* 0x3434 */
return "nilfs";
case S_MAGIC_NTFS: /* 0x5346544E */
return "ntfs";
case S_MAGIC_OPENPROM: /* 0x9FA1 */
return "openprom";
case S_MAGIC_OCFS2: /* 0x7461636f */
return "ocfs2";
case S_MAGIC_PROC: /* 0x9FA0 */
return "proc";
case S_MAGIC_QNX4: /* 0x002F */
return "qnx4";
case S_MAGIC_RAMFS: /* 0x858458F6 */
return "ramfs";
case S_MAGIC_REISERFS: /* 0x52654973 */
return "reiserfs";
case S_MAGIC_ROMFS: /* 0x7275 */
return "romfs";
case S_MAGIC_RPC_PIPEFS: /* 0x67596969 */
return "rpc_pipefs";
case S_MAGIC_SECURITYFS: /* 0x73636673 */
return "securityfs";
case S_MAGIC_SELINUX: /* 0xF97CFF8C */
return "selinux";
case S_MAGIC_SMB: /* 0x517B */
return "smb";
case S_MAGIC_SOCKFS: /* 0x534F434B */
return "sockfs";
case S_MAGIC_SQUASHFS: /* 0x73717368 */
return "squashfs";
case S_MAGIC_SYSFS: /* 0x62656572 */
return "sysfs";
case S_MAGIC_SYSV2: /* 0x012FF7B6 */
return "sysv2";
case S_MAGIC_SYSV4: /* 0x012FF7B5 */
return "sysv4";
case S_MAGIC_TMPFS: /* 0x01021994 */
return "tmpfs";
case S_MAGIC_UDF: /* 0x15013346 */
return "udf";
case S_MAGIC_UFS: /* 0x00011954 */
return "ufs";
case S_MAGIC_UFS_BYTESWAPPED: /* 0x54190100 */
return "ufs";
case S_MAGIC_USBDEVFS: /* 0x9FA2 */
return "usbdevfs";
case S_MAGIC_VXFS: /* 0xA501FCF5 */
return "vxfs";
case S_MAGIC_XENFS: /* 0xABBA1974 */
return "xenfs";
case S_MAGIC_XENIX: /* 0x012FF7B4 */
return "xenix";
case S_MAGIC_XFS: /* 0x58465342 */
return "xfs";
case S_MAGIC_XIAFS: /* 0x012FD16D */
return "xia";
# elif __GNU__
case FSTYPE_UFS:
return "ufs";
case FSTYPE_NFS:
return "nfs";
case FSTYPE_GFS:
return "gfs";
case FSTYPE_LFS:
return "lfs";
case FSTYPE_SYSV:
return "sysv";
case FSTYPE_FTP:
return "ftp";
case FSTYPE_TAR:
return "tar";
case FSTYPE_AR:
return "ar";
case FSTYPE_CPIO:
return "cpio";
case FSTYPE_MSLOSS:
return "msloss";
case FSTYPE_CPM:
return "cpm";
case FSTYPE_HFS:
return "hfs";
case FSTYPE_DTFS:
return "dtfs";
case FSTYPE_GRFS:
return "grfs";
case FSTYPE_TERM:
return "term";
case FSTYPE_DEV:
return "dev";
case FSTYPE_PROC:
return "proc";
case FSTYPE_IFSOCK:
return "ifsock";
case FSTYPE_AFS:
return "afs";
case FSTYPE_DFS:
return "dfs";
case FSTYPE_PROC9:
return "proc9";
case FSTYPE_SOCKET:
return "socket";
case FSTYPE_MISC:
return "misc";
case FSTYPE_EXT2FS:
return "ext2/ext3";
case FSTYPE_HTTP:
return "http";
case FSTYPE_MEMFS:
return "memfs";
case FSTYPE_ISO9660:
return "iso9660";
# endif
default:
{
unsigned long int type = statfsbuf->f_type;
static char buf[sizeof "UNKNOWN (0x%lx)" - 3
+ (sizeof type * CHAR_BIT + 3) / 4];
sprintf (buf, "UNKNOWN (0x%lx)", type);
return buf;
}
}
#endif
}
static char *
human_access (struct stat const *statbuf)
{
static char modebuf[12];
filemodestring (statbuf, modebuf);
modebuf[10] = 0;
return modebuf;
}
static char *
human_time (struct timespec t)
{
static char str[MAX (INT_BUFSIZE_BOUND (intmax_t),
(INT_STRLEN_BOUND (int) /* YYYY */
+ 1 /* because YYYY might equal INT_MAX + 1900 */
+ sizeof "-MM-DD HH:MM:SS.NNNNNNNNN +ZZZZ"))];
struct tm const *tm = localtime (&t.tv_sec);
if (tm == NULL)
return timetostr (t.tv_sec, str);
nstrftime (str, sizeof str, "%Y-%m-%d %H:%M:%S.%N %z", tm, 0, t.tv_nsec);
return str;
}
static void
out_string (char *pformat, size_t prefix_len, char const *arg)
{
strcpy (pformat + prefix_len, "s");
printf (pformat, arg);
}
static void
out_int (char *pformat, size_t prefix_len, intmax_t arg)
{
strcpy (pformat + prefix_len, PRIdMAX);
printf (pformat, arg);
}
static void
out_uint (char *pformat, size_t prefix_len, uintmax_t arg)
{
strcpy (pformat + prefix_len, PRIuMAX);
printf (pformat, arg);
}
static void
out_uint_o (char *pformat, size_t prefix_len, uintmax_t arg)
{
strcpy (pformat + prefix_len, PRIoMAX);
printf (pformat, arg);
}
static void
out_uint_x (char *pformat, size_t prefix_len, uintmax_t arg)
{
strcpy (pformat + prefix_len, PRIxMAX);
printf (pformat, arg);
}
/* Very specialized function (modifies FORMAT), just so as to avoid
duplicating this code between both print_statfs and print_stat. */
static void
out_file_context (char const *filename, char *pformat, size_t prefix_len)
{
char *scontext;
if ((follow_links
? getfilecon (filename, &scontext)
: lgetfilecon (filename, &scontext)) < 0)
{
error (0, errno, _("failed to get security context of %s"),
quote (filename));
scontext = NULL;
}
strcpy (pformat + prefix_len, "s");
printf (pformat, (scontext ? scontext : "?"));
if (scontext)
freecon (scontext);
}
/* print statfs info */
static void
print_statfs (char *pformat, size_t prefix_len, char m, char const *filename,
void const *data)
{
STRUCT_STATVFS const *statfsbuf = data;
switch (m)
{
case 'n':
out_string (pformat, prefix_len, filename);
break;
case 'i':
{
#if STRUCT_STATXFS_F_FSID_IS_INTEGER
uintmax_t fsid = statfsbuf->f_fsid;
#else
typedef unsigned int fsid_word;
verify (alignof (STRUCT_STATVFS) % alignof (fsid_word) == 0);
verify (offsetof (STRUCT_STATVFS, f_fsid) % alignof (fsid_word) == 0);
verify (sizeof statfsbuf->f_fsid % alignof (fsid_word) == 0);
fsid_word const *p = (fsid_word *) &statfsbuf->f_fsid;
/* Assume a little-endian word order, as that is compatible
with glibc's statvfs implementation. */
uintmax_t fsid = 0;
int words = sizeof statfsbuf->f_fsid / sizeof *p;
int i;
for (i = 0; i < words && i * sizeof *p < sizeof fsid; i++)
{
uintmax_t u = p[words - 1 - i];
fsid |= u << (i * CHAR_BIT * sizeof *p);
}
#endif
out_uint_x (pformat, prefix_len, fsid);
}
break;
case 'l':
OUT_NAMEMAX (pformat, prefix_len, SB_F_NAMEMAX (statfsbuf));
break;
case 't':
#if HAVE_STRUCT_STATXFS_F_TYPE
out_uint_x (pformat, prefix_len, statfsbuf->f_type);
#else
fputc ('?', stdout);
#endif
break;
case 'T':
out_string (pformat, prefix_len, human_fstype (statfsbuf));
break;
case 'b':
out_int (pformat, prefix_len, statfsbuf->f_blocks);
break;
case 'f':
out_int (pformat, prefix_len, statfsbuf->f_bfree);
break;
case 'a':
out_int (pformat, prefix_len, statfsbuf->f_bavail);
break;
case 's':
out_uint (pformat, prefix_len, statfsbuf->f_bsize);
break;
case 'S':
{
uintmax_t frsize = STATFS_FRSIZE (statfsbuf);
if (! frsize)
frsize = statfsbuf->f_bsize;
out_uint (pformat, prefix_len, frsize);
}
break;
case 'c':
out_uint (pformat, prefix_len, statfsbuf->f_files);
break;
case 'd':
out_int (pformat, prefix_len, statfsbuf->f_ffree);
break;
case 'C':
out_file_context (filename, pformat, prefix_len);
break;
default:
fputc ('?', stdout);
break;
}
}
/* print stat info */
static void
print_stat (char *pformat, size_t prefix_len, char m,
char const *filename, void const *data)
{
struct stat *statbuf = (struct stat *) data;
struct passwd *pw_ent;
struct group *gw_ent;
switch (m)
{
case 'n':
out_string (pformat, prefix_len, filename);
break;
case 'N':
out_string (pformat, prefix_len, quote (filename));
if (S_ISLNK (statbuf->st_mode))
{
char *linkname = areadlink_with_size (filename, statbuf->st_size);
if (linkname == NULL)
{
error (0, errno, _("cannot read symbolic link %s"),
quote (filename));
return;
}
printf (" -> ");
out_string (pformat, prefix_len, quote (linkname));
}
break;
case 'd':
out_uint (pformat, prefix_len, statbuf->st_dev);
break;
case 'D':
out_uint_x (pformat, prefix_len, statbuf->st_dev);
break;
case 'i':
out_uint (pformat, prefix_len, statbuf->st_ino);
break;
case 'a':
out_uint_o (pformat, prefix_len, statbuf->st_mode & CHMOD_MODE_BITS);
break;
case 'A':
out_string (pformat, prefix_len, human_access (statbuf));
break;
case 'f':
out_uint_x (pformat, prefix_len, statbuf->st_mode);
break;
case 'F':
out_string (pformat, prefix_len, file_type (statbuf));
break;
case 'h':
out_uint (pformat, prefix_len, statbuf->st_nlink);
break;
case 'u':
out_uint (pformat, prefix_len, statbuf->st_uid);
break;
case 'U':
setpwent ();
pw_ent = getpwuid (statbuf->st_uid);
out_string (pformat, prefix_len,
pw_ent ? pw_ent->pw_name : "UNKNOWN");
break;
case 'g':
out_uint (pformat, prefix_len, statbuf->st_gid);
break;
case 'G':
setgrent ();
gw_ent = getgrgid (statbuf->st_gid);
out_string (pformat, prefix_len,
gw_ent ? gw_ent->gr_name : "UNKNOWN");
break;
case 't':
out_uint_x (pformat, prefix_len, major (statbuf->st_rdev));
break;
case 'T':
out_uint_x (pformat, prefix_len, minor (statbuf->st_rdev));
break;
case 's':
out_uint (pformat, prefix_len, statbuf->st_size);
break;
case 'B':
out_uint (pformat, prefix_len, ST_NBLOCKSIZE);
break;
case 'b':
out_uint (pformat, prefix_len, ST_NBLOCKS (*statbuf));
break;
case 'o':
out_uint (pformat, prefix_len, statbuf->st_blksize);
break;
case 'x':
out_string (pformat, prefix_len, human_time (get_stat_atime (statbuf)));
break;
case 'X':
if (TYPE_SIGNED (time_t))
out_int (pformat, prefix_len, statbuf->st_atime);
else
out_uint (pformat, prefix_len, statbuf->st_atime);
break;
case 'y':
out_string (pformat, prefix_len, human_time (get_stat_mtime (statbuf)));
break;
case 'Y':
if (TYPE_SIGNED (time_t))
out_int (pformat, prefix_len, statbuf->st_mtime);
else
out_uint (pformat, prefix_len, statbuf->st_mtime);
break;
case 'z':
out_string (pformat, prefix_len, human_time (get_stat_ctime (statbuf)));
break;
case 'Z':
if (TYPE_SIGNED (time_t))
out_int (pformat, prefix_len, statbuf->st_ctime);
else
out_uint (pformat, prefix_len, statbuf->st_ctime);
break;
case 'C':
out_file_context (filename, pformat, prefix_len);
break;
default:
fputc ('?', stdout);
break;
}
}
/* Output a single-character \ escape. */
static void
print_esc_char (char c)
{
switch (c)
{
case 'a': /* Alert. */
c ='\a';
break;
case 'b': /* Backspace. */
c ='\b';
break;
case 'e': /* Escape. */
c ='\x1B';
break;
case 'f': /* Form feed. */
c ='\f';
break;
case 'n': /* New line. */
c ='\n';
break;
case 'r': /* Carriage return. */
c ='\r';
break;
case 't': /* Horizontal tab. */
c ='\t';
break;
case 'v': /* Vertical tab. */
c ='\v';
break;
case '"':
case '\\':
break;
default:
error (0, 0, _("warning: unrecognized escape `\\%c'"), c);
break;
}
putchar (c);
}
static void
print_it (char const *format, char const *filename,
void (*print_func) (char *, size_t, char, char const *, void const *),
void const *data)
{
/* Add 2 to accommodate our conversion of the stat `%s' format string
to the longer printf `%llu' one. */
enum
{
MAX_ADDITIONAL_BYTES =
(MAX (sizeof PRIdMAX,
MAX (sizeof PRIoMAX, MAX (sizeof PRIuMAX, sizeof PRIxMAX)))
- 1)
};
size_t n_alloc = strlen (format) + MAX_ADDITIONAL_BYTES + 1;
char *dest = xmalloc (n_alloc);
char const *b;
for (b = format; *b; b++)
{
switch (*b)
{
case '%':
{
size_t len = strspn (b + 1, "#-+.I 0123456789");
char const *fmt_char = b + len + 1;
memcpy (dest, b, len + 1);
b = fmt_char;
switch (*fmt_char)
{
case '\0':
--b;
/* fall through */
case '%':
if (0 < len)
{
dest[len + 1] = *fmt_char;
dest[len + 2] = '\0';
error (EXIT_FAILURE, 0, _("%s: invalid directive"),
quotearg_colon (dest));
}
putchar ('%');
break;
default:
print_func (dest, len + 1, *fmt_char, filename, data);
break;
}
break;
}
case '\\':
if ( ! interpret_backslash_escapes)
{
putchar ('\\');
break;
}
++b;
if (isodigit (*b))
{
int esc_value = octtobin (*b);
int esc_length = 1; /* number of octal digits */
for (++b; esc_length < 3 && isodigit (*b);
++esc_length, ++b)
{
esc_value = esc_value * 8 + octtobin (*b);
}
putchar (esc_value);
--b;
}
else if (*b == 'x' && isxdigit (to_uchar (b[1])))
{
int esc_value = hextobin (b[1]); /* Value of \xhh escape. */
/* A hexadecimal \xhh escape sequence must have
1 or 2 hex. digits. */
++b;
if (isxdigit (to_uchar (b[1])))
{
++b;
esc_value = esc_value * 16 + hextobin (*b);
}
putchar (esc_value);
}
else if (*b == '\0')
{
error (0, 0, _("warning: backslash at end of format"));
putchar ('\\');
/* Arrange to exit the loop. */
--b;
}
else
{
print_esc_char (*b);
}
break;
default:
putchar (*b);
break;
}
}
free (dest);
fputs (trailing_delim, stdout);
}
/* Stat the file system and print what we find. */
static bool
do_statfs (char const *filename, bool terse, char const *format)
{
STRUCT_STATVFS statfsbuf;
if (STREQ (filename, "-"))
{
error (0, 0, _("using %s to denote standard input does not work"
" in file system mode"), quote (filename));
return false;
}
if (STATFS (filename, &statfsbuf) != 0)
{
error (0, errno, _("cannot read file system information for %s"),
quote (filename));
return false;
}
if (format == NULL)
{
format = (terse
? "%n %i %l %t %s %S %b %f %a %c %d\n"
: " File: \"%n\"\n"
" ID: %-8i Namelen: %-7l Type: %T\n"
"Block size: %-10s Fundamental block size: %S\n"
"Blocks: Total: %-10b Free: %-10f Available: %a\n"
"Inodes: Total: %-10c Free: %d\n");
}
print_it (format, filename, print_statfs, &statfsbuf);
return true;
}
/* stat the file and print what we find */
static bool
do_stat (char const *filename, bool terse, char const *format)
{
struct stat statbuf;
if (STREQ (filename, "-"))
{
if (fstat (STDIN_FILENO, &statbuf) != 0)
{
error (0, errno, _("cannot stat standard input"));
return false;
}
}
/* We can't use the shorter
(follow_links?stat:lstat) (filename, &statbug)
since stat might be a function-like macro. */
else if ((follow_links
? stat (filename, &statbuf)
: lstat (filename, &statbuf)) != 0)
{
error (0, errno, _("cannot stat %s"), quote (filename));
return false;
}
if (format == NULL)
{
if (terse)
{
format = "%n %s %b %f %u %g %D %i %h %t %T %X %Y %Z %o\n";
}
else
{
/* Temporary hack to match original output until conditional
implemented. */
if (S_ISBLK (statbuf.st_mode) || S_ISCHR (statbuf.st_mode))
{
format =
" File: %N\n"
" Size: %-10s\tBlocks: %-10b IO Block: %-6o %F\n"
"Device: %Dh/%dd\tInode: %-10i Links: %-5h"
" Device type: %t,%T\n"
"Access: (%04a/%10.10A) Uid: (%5u/%8U) Gid: (%5g/%8G)\n"
"Access: %x\n" "Modify: %y\n" "Change: %z\n";
}
else
{
format =
" File: %N\n"
" Size: %-10s\tBlocks: %-10b IO Block: %-6o %F\n"
"Device: %Dh/%dd\tInode: %-10i Links: %h\n"
"Access: (%04a/%10.10A) Uid: (%5u/%8U) Gid: (%5g/%8G)\n"
"Access: %x\n" "Modify: %y\n" "Change: %z\n";
}
}
}
print_it (format, filename, print_stat, &statbuf);
return true;
}
void
usage (int status)
{
if (status != EXIT_SUCCESS)
fprintf (stderr, _("Try `%s --help' for more information.\n"),
program_name);
else
{
printf (_("Usage: %s [OPTION]... FILE...\n"), program_name);
fputs (_("\
Display file or file system status.\n\
\n\
-L, --dereference follow links\n\
-f, --file-system display file system status instead of file status\n\
"), stdout);
fputs (_("\
-c --format=FORMAT use the specified FORMAT instead of the default;\n\
output a newline after each use of FORMAT\n\
--printf=FORMAT like --format, but interpret backslash escapes,\n\
and do not output a mandatory trailing newline.\n\
If you want a newline, include \\n in FORMAT\n\
-t, --terse print the information in terse form\n\
"), stdout);
fputs (HELP_OPTION_DESCRIPTION, stdout);
fputs (VERSION_OPTION_DESCRIPTION, stdout);
fputs (_("\n\
The valid format sequences for files (without --file-system):\n\
\n\
%a Access rights in octal\n\
%A Access rights in human readable form\n\
%b Number of blocks allocated (see %B)\n\
%B The size in bytes of each block reported by %b\n\
%C SELinux security context string\n\