353 lines
8.2 KiB
C
353 lines
8.2 KiB
C
/* chattr.c
|
|
|
|
Written by Corinna Vinschen <vinschen@redhat.com>
|
|
|
|
This file is part of Cygwin.
|
|
|
|
This software is a copyrighted work licensed under the terms of the
|
|
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
|
|
details. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <getopt.h>
|
|
#include <dirent.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/ioctl.h>
|
|
#include <cygwin/fs.h>
|
|
#include <cygwin/version.h>
|
|
|
|
int Ropt, Vopt, fopt;
|
|
uint64_t add, del, set;
|
|
|
|
struct option longopts[] = {
|
|
{ "recursive", no_argument, NULL, 'R' },
|
|
{ "verbose", no_argument, NULL, 'V' },
|
|
{ "force", no_argument, NULL, 'f' },
|
|
{ "help", no_argument, NULL, 'H' },
|
|
{ "version", no_argument, NULL, 'v' },
|
|
{ NULL, no_argument, NULL, 0}
|
|
};
|
|
|
|
const char *opts = "+RVfHv";
|
|
|
|
struct
|
|
{
|
|
uint64_t flagval;
|
|
char chr;
|
|
const char *str;
|
|
} supp_flag[] = {
|
|
{ FS_READONLY_FL, 'r', "Readonly" },
|
|
{ FS_HIDDEN_FL, 'h', "Hidden" },
|
|
{ FS_SYSTEM_FL, 's', "System" },
|
|
{ FS_ARCHIVE_FL, 'a', "Archive" },
|
|
{ FS_TEMP_FL, 't', "Temporary" },
|
|
{ FS_SPARSE_FL, 'S', "Sparse" },
|
|
{ FS_REPARSE_FL, 'r', NULL },
|
|
{ FS_COMPRESSED_FL, 'c', "Compressed" },
|
|
{ FS_OFFLINE_FL, 'o', NULL },
|
|
{ FS_NOTINDEXED_FL, 'n', "Notindexed" },
|
|
{ FS_ENCRYPT_FL, 'e', "Encrypted" },
|
|
{ FS_CASESENS_FL, 'C', "Casesensitive" },
|
|
{ 0, '\0', NULL },
|
|
};
|
|
const char *supp_list = "rhsatSrconeC";
|
|
|
|
void
|
|
print_flags (uint64_t flags)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; supp_flag[i].flagval; ++i)
|
|
fputc ((flags & supp_flag[i].flagval) ? supp_flag[i].chr : '-', stdout);
|
|
}
|
|
|
|
int
|
|
get_flags (const char *opt)
|
|
{
|
|
const char *p = opt, *sl;
|
|
uint64_t *mode;
|
|
ptrdiff_t idx;
|
|
|
|
switch (*p)
|
|
{
|
|
case '+':
|
|
mode = &add;
|
|
break;
|
|
case '-':
|
|
mode = &del;
|
|
break;
|
|
case '=':
|
|
mode = &set;
|
|
break;
|
|
default:
|
|
return 1;
|
|
}
|
|
while (*++p)
|
|
{
|
|
sl = strchr (supp_list, *p);
|
|
if (!sl)
|
|
return 1;
|
|
idx = sl - supp_list;
|
|
if (!supp_flag[idx].str)
|
|
return 1;
|
|
*mode |= supp_flag[idx].flagval;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
sanity_check ()
|
|
{
|
|
int ret = -1;
|
|
if (!set && !add && !del)
|
|
fprintf (stderr, "%s: Must use at least one of =, + or -\n",
|
|
program_invocation_short_name);
|
|
else if (set && (add | del))
|
|
fprintf (stderr, "%s: = is incompatible with + and -\n",
|
|
program_invocation_short_name);
|
|
else if ((add & del) != 0)
|
|
fprintf (stderr, "%s: Can't both set and unset same flag.\n",
|
|
program_invocation_short_name);
|
|
else
|
|
ret = 0;
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
chattr (const char *path)
|
|
{
|
|
int fd;
|
|
uint64_t flags, newflags;
|
|
|
|
fd = open (path, O_RDONLY);
|
|
if (fd < 0)
|
|
{
|
|
fprintf (stderr, "%s: %s while trying to open %s\n",
|
|
program_invocation_short_name, strerror (errno), path);
|
|
return 1;
|
|
}
|
|
if (ioctl (fd, FS_IOC_GETFLAGS, &flags))
|
|
{
|
|
close (fd);
|
|
fprintf (stderr, "%s: %s while trying to fetch flags from %s\n",
|
|
program_invocation_short_name, strerror (errno), path);
|
|
return 1;
|
|
}
|
|
if (set)
|
|
newflags = set;
|
|
else
|
|
{
|
|
newflags = flags;
|
|
newflags |= add;
|
|
newflags &= ~del;
|
|
}
|
|
if (newflags != flags)
|
|
{
|
|
if (Vopt)
|
|
{
|
|
printf ("Flags of %s set as ", path);
|
|
print_flags (newflags);
|
|
fputc ('\n', stdout);
|
|
}
|
|
if (ioctl (fd, FS_IOC_SETFLAGS, &newflags))
|
|
{
|
|
close (fd);
|
|
fprintf (stderr, "%s: %s while trying to set flags on %s\n",
|
|
program_invocation_short_name, strerror (errno), path);
|
|
return 1;
|
|
}
|
|
}
|
|
close (fd);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
chattr_dir (const char *path)
|
|
{
|
|
DIR *dir;
|
|
struct dirent *de;
|
|
char *subpath = (char *) malloc (strlen (path) + 1 + NAME_MAX + 1);
|
|
char *comp;
|
|
|
|
dir = opendir (path);
|
|
if (!dir)
|
|
{
|
|
free (subpath);
|
|
return 1;
|
|
}
|
|
comp = stpcpy (subpath, path);
|
|
if (comp[-1] != '/')
|
|
*comp++ = '/';
|
|
while ((de = readdir (dir)))
|
|
{
|
|
struct stat st;
|
|
|
|
if (strcmp (de->d_name, ".") == 0 || strcmp (de->d_name, "..") == 0)
|
|
continue;
|
|
|
|
stpcpy (comp, de->d_name);
|
|
if (lstat (subpath, &st) != 0)
|
|
fprintf (stderr, "%s: %s while trying to stat %s\n",
|
|
program_invocation_short_name, strerror (errno),
|
|
subpath);
|
|
else
|
|
{
|
|
if (S_ISREG (st.st_mode) || S_ISDIR (st.st_mode))
|
|
chattr (subpath);
|
|
if (S_ISDIR (st.st_mode) && Ropt)
|
|
chattr_dir (subpath);
|
|
}
|
|
}
|
|
free (subpath);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
print_version ()
|
|
{
|
|
printf ("%s (cygwin) %d.%d.%d\n"
|
|
"Change file attributes\n"
|
|
"Copyright (C) 2018 - %s Cygwin Authors\n"
|
|
"This is free software; see the source for copying conditions. "
|
|
"There is NO\n"
|
|
"warranty; not even for MERCHANTABILITY or FITNESS FOR A "
|
|
"PARTICULAR PURPOSE.\n",
|
|
program_invocation_short_name,
|
|
CYGWIN_VERSION_DLL_MAJOR / 1000,
|
|
CYGWIN_VERSION_DLL_MAJOR % 1000,
|
|
CYGWIN_VERSION_DLL_MINOR,
|
|
strrchr (__DATE__, ' ') + 1);
|
|
}
|
|
|
|
static void __attribute__ ((__noreturn__))
|
|
usage (FILE *stream)
|
|
{
|
|
fprintf (stream, "Usage: %s [-RVfHv] [+-=mode]... [file]...\n",
|
|
program_invocation_short_name);
|
|
if (stream == stderr)
|
|
fprintf (stream, "Try '%s --help' for more information\n",
|
|
program_invocation_short_name);
|
|
if (stream == stdout)
|
|
fprintf (stream, "\n"
|
|
"Change file attributes\n"
|
|
"\n"
|
|
" -R, --recursive recursively apply the changes to directories and their\n"
|
|
" contents\n"
|
|
" -V, --verbose Be verbose during operation\n"
|
|
" -f, --force suppress error messages\n"
|
|
" -H, --help this help text\n"
|
|
" -v, --version display the program version\n"
|
|
"\n"
|
|
"The format of 'mode' is {+-=}[acCehnrsSt]\n"
|
|
"\n"
|
|
"The operator '+' causes the selected attributes to be added to the\n"
|
|
"existing attributes of the files; '-' causes them to be removed; and\n"
|
|
"'=' causes them to be the only attributes that the files have.\n"
|
|
"\n"
|
|
"Supported attributes:\n"
|
|
"\n"
|
|
" 'r', 'Readonly': file is read-only\n"
|
|
" 'h', 'Hidden': file or directory is hidden\n"
|
|
" 's', 'System': file or directory that the operating system uses\n"
|
|
" 'a', 'Archive': file or directory has the archive marker set\n"
|
|
" 't', 'Temporary': file is being used for temporary storage\n"
|
|
" 'S', 'Sparse': file is sparse\n"
|
|
" 'c', 'Compressed': file or directory is compressed\n"
|
|
" 'n', 'Notindexed': file or directory is not to be indexed by the\n"
|
|
" content indexing service\n"
|
|
" 'e', 'Encrypted': file is encrypted\n"
|
|
" 'C', 'Casesensitive': directory is handled case sensitive\n"
|
|
" (Windows 10 1803 or later, local NTFS only,\n"
|
|
" WSL must be installed)\n");
|
|
exit (stream == stdout ? 0 : 1);
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
int c, ret = 0;
|
|
int lastoptind = 1;
|
|
char *opt;
|
|
|
|
opterr = 0;
|
|
while ((c = getopt_long (argc, argv, opts, longopts, NULL)) != EOF)
|
|
{
|
|
switch (c)
|
|
{
|
|
case 'R':
|
|
Ropt = 1;
|
|
break;
|
|
case 'V':
|
|
Vopt = 1;
|
|
break;
|
|
case 'f':
|
|
fopt = 1;
|
|
break;
|
|
case 'H':
|
|
usage (stdout);
|
|
break;
|
|
case 'v':
|
|
print_version ();
|
|
return 0;
|
|
break;
|
|
default:
|
|
if (optind > lastoptind)
|
|
--optind;
|
|
goto next;
|
|
}
|
|
lastoptind = optind;
|
|
}
|
|
next:
|
|
while (optind < argc)
|
|
{
|
|
if (strcmp (argv[optind], "--") == 0)
|
|
{
|
|
++optind;
|
|
break;
|
|
}
|
|
opt = strchr ("+-=", argv[optind][0]);
|
|
if (!opt)
|
|
break;
|
|
if (argv[optind][1] == '\0' || get_flags (argv[optind]))
|
|
usage (stderr);
|
|
++optind;
|
|
}
|
|
if (sanity_check ())
|
|
return 1;
|
|
if (optind > argc - 1)
|
|
usage (stderr);
|
|
|
|
for (; optind < argc; ++optind)
|
|
{
|
|
struct stat st;
|
|
|
|
if (lstat (argv[optind], &st) != 0)
|
|
{
|
|
fprintf (stderr, "%s: %s while trying to stat %s\n",
|
|
program_invocation_short_name, strerror (errno),
|
|
argv[optind]);
|
|
ret = 1;
|
|
}
|
|
else if (!S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode))
|
|
{
|
|
fprintf (stderr, "%s: %s on %s\n",
|
|
program_invocation_short_name, strerror (ENOTSUP),
|
|
argv[optind]);
|
|
ret = 1;
|
|
}
|
|
else
|
|
{
|
|
if (chattr (argv[optind]))
|
|
ret = 1;
|
|
if (S_ISDIR (st.st_mode) && Ropt && chattr_dir (argv[optind]))
|
|
ret = 1;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|