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selinux support by Yuichi Nakamura <ynakam@hitachisoft.jp> (HitachiSoft)

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This commit is contained in:
Denis Vlasenko
2007-03-10 16:58:49 +00:00
parent 4eb8b936cb
commit 49622d7846
14 changed files with 452 additions and 47 deletions
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169
coreutils/stat.c
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@ -5,6 +5,7 @@
* Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation.
* Copyright (C) 2005 by Erik Andersen <andersen@codepoet.org>
* Copyright (C) 2005 by Mike Frysinger <vapier@gentoo.org>
* Copyright (C) 2006 by Yoshinori Sato <ysato@users.sourceforge.jp>
*
* Written by Michael Meskes
* Taken from coreutils and turned into a busybox applet by Mike Frysinger
@ -17,6 +18,7 @@
/* vars to control behavior */
#define OPT_TERSE 2
#define OPT_DEREFERENCE 4
#define OPT_SELINUX 8
static long flags;
static char const *file_type(struct stat const *st)
@ -114,7 +116,8 @@ static char const *human_fstype(long f_type)
#ifdef CONFIG_FEATURE_STAT_FORMAT
/* print statfs info */
static void print_statfs(char *pformat, size_t buf_len, char m,
char const *filename, void const *data)
char const *filename, void const *data
USE_SELINUX(,security_context_t scontext) )
{
struct statfs const *statfsbuf = data;
@ -164,6 +167,14 @@ static void print_statfs(char *pformat, size_t buf_len, char m,
strncat(pformat, "jd", buf_len);
printf(pformat, (intmax_t) (statfsbuf->f_ffree));
break;
#if ENABLE_SELINUX
case 'C':
if (flags & OPT_SELINUX) {
strncat(pformat, "s", buf_len);
printf(scontext);
}
break;
#endif
default:
strncat(pformat, "c", buf_len);
printf(pformat, m);
@ -173,7 +184,8 @@ static void print_statfs(char *pformat, size_t buf_len, char m,
/* print stat info */
static void print_stat(char *pformat, size_t buf_len, char m,
char const *filename, void const *data)
char const *filename, void const *data
USE_SELINUX(, security_context_t scontext))
{
#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
struct stat *statbuf = (struct stat *) data;
@ -301,6 +313,14 @@ static void print_stat(char *pformat, size_t buf_len, char m,
strncat(pformat, TYPE_SIGNED(time_t) ? "ld" : "lu", buf_len);
printf(pformat, (unsigned long int) statbuf->st_ctime);
break;
#if ENABLE_SELINUX
case 'C':
if (flags & OPT_SELINUX) {
strncat(pformat, "s", buf_len);
printf(pformat, scontext);
}
break;
#endif
default:
strncat(pformat, "c", buf_len);
printf(pformat, m);
@ -309,8 +329,9 @@ static void print_stat(char *pformat, size_t buf_len, char m,
}
static void print_it(char const *masterformat, char const *filename,
void (*print_func) (char *, size_t, char, char const *, void const *),
void const *data)
void (*print_func) (char *, size_t, char, char const *, void const *
USE_SELINUX(, security_context_t scontext)),
void const *data USE_SELINUX(, security_context_t scontext) )
{
char *b;
@ -350,7 +371,7 @@ static void print_it(char const *masterformat, char const *filename,
putchar('%');
break;
default:
print_func(dest, n_alloc, *p, filename, data);
print_func(dest, n_alloc, *p, filename, data USE_SELINUX(,scontext));
break;
}
}
@ -365,6 +386,16 @@ static int do_statfs(char const *filename, char const *format)
{
struct statfs statfsbuf;
#if ENABLE_SELINUX
security_context_t scontext = NULL;
if (flags & OPT_SELINUX) {
if ((flags & OPT_DEREFERENCE ? lgetfilecon(filename, scontext):
getfilecon(filename, scontext))< 0) {
bb_perror_msg(filename);
return 0;
}
}
#endif
if (statfs(filename, &statfsbuf) != 0) {
bb_perror_msg("cannot read file system information for '%s'", filename);
return 0;
@ -372,6 +403,7 @@ static int do_statfs(char const *filename, char const *format)
#ifdef CONFIG_FEATURE_STAT_FORMAT
if (format == NULL)
#ifndef ENABLE_SELINUX
format = (flags & OPT_TERSE
? "%n %i %l %t %s %b %f %a %c %d\n"
: " File: \"%n\"\n"
@ -379,9 +411,27 @@ static int do_statfs(char const *filename, char const *format)
"Block size: %-10s\n"
"Blocks: Total: %-10b Free: %-10f Available: %a\n"
"Inodes: Total: %-10c Free: %d");
print_it(format, filename, print_statfs, &statfsbuf);
print_it(format, filename, print_statfs, &statfsbuf USE_SELINUX(, scontext));
#else
format = (flags & OPT_TERSE
? (flags & OPT_SELINUX ? "%n %i %l %t %s %b %f %a %c %d %C\n":
"%n %i %l %t %s %b %f %a %c %d\n")
: (flags & OPT_SELINUX ?
" File: \"%n\"\n"
" ID: %-8i Namelen: %-7l Type: %T\n"
"Block size: %-10s\n"
"Blocks: Total: %-10b Free: %-10f Available: %a\n"
"Inodes: Total: %-10c Free: %d"
" S_context: %C\n":
" File: \"%n\"\n"
" ID: %-8i Namelen: %-7l Type: %T\n"
"Block size: %-10s\n"
"Blocks: Total: %-10b Free: %-10f Available: %a\n"
"Inodes: Total: %-10c Free: %d\n")
);
print_it(format, filename, print_statfs, &statfsbuf USE_SELINUX(, scontext));
#endif /* SELINUX */
#else /* FEATURE_STAT_FORMAT */
format = (flags & OPT_TERSE
? "%s %llx %lu "
: " File: \"%s\"\n"
@ -396,6 +446,7 @@ static int do_statfs(char const *filename, char const *format)
else
printf("Type: %s\n", human_fstype(statfsbuf.f_type));
#if !ENABLE_SELINUX
format = (flags & OPT_TERSE
? "%lu %ld %ld %ld %ld %ld\n"
: "Block size: %-10lu\n"
@ -408,8 +459,31 @@ static int do_statfs(char const *filename, char const *format)
(intmax_t) (statfsbuf.f_bavail),
(intmax_t) (statfsbuf.f_files),
(intmax_t) (statfsbuf.f_ffree));
#endif
#else
format = (flags & OPT_TERSE
? (flags & OPT_SELINUX ? "%lu %ld %ld %ld %ld %ld %C\n":
"%lu %ld %ld %ld %ld %ld\n")
: (flags & OPT_SELINUX ?
"Block size: %-10lu\n"
"Blocks: Total: %-10jd Free: %-10jd Available: %jd\n"
"Inodes: Total: %-10jd Free: %jd"
"S_context: %C\n":
"Block size: %-10lu\n"
"Blocks: Total: %-10jd Free: %-10jd Available: %jd\n"
"Inodes: Total: %-10jd Free: %jd\n"));
printf(format,
(unsigned long int) (statfsbuf.f_bsize),
(intmax_t) (statfsbuf.f_blocks),
(intmax_t) (statfsbuf.f_bfree),
(intmax_t) (statfsbuf.f_bavail),
(intmax_t) (statfsbuf.f_files),
(intmax_t) (statfsbuf.f_ffree),
scontext);
if (scontext)
freecon(scontext);
#endif
#endif /* FEATURE_STAT_FORMAT */
return 1;
}
@ -417,7 +491,16 @@ static int do_statfs(char const *filename, char const *format)
static int do_stat(char const *filename, char const *format)
{
struct stat statbuf;
#if ENABLE_SELINUX
security_context_t scontext = NULL;
if (flags & OPT_SELINUX) {
if ((flags & OPT_DEREFERENCE ? lgetfilecon(filename, scontext):
getfilecon(filename, scontext))< 0) {
bb_perror_msg (filename);
return 0;
}
}
#endif
if ((flags & OPT_DEREFERENCE ? stat : lstat) (filename, &statbuf) != 0) {
bb_perror_msg("cannot stat '%s'", filename);
return 0;
@ -425,6 +508,7 @@ static int do_stat(char const *filename, char const *format)
#ifdef CONFIG_FEATURE_STAT_FORMAT
if (format == NULL) {
#ifndef ENABLE_SELINUX
if (flags & OPT_TERSE) {
format = "%n %s %b %f %u %g %D %i %h %t %T %X %Y %Z %o";
} else {
@ -445,11 +529,49 @@ static int do_stat(char const *filename, char const *format)
"Access: %x\n" "Modify: %y\n" "Change: %z\n";
}
}
}
print_it(format, filename, print_stat, &statbuf);
#else
if (flags & OPT_TERSE) {
format = (flags & OPT_SELINUX ?
"%n %s %b %f %u %g %D %i %h %t %T %X %Y %Z %o %C\n":
"%n %s %b %f %u %g %D %i %h %t %T %X %Y %Z %o\n");
} else {
if (S_ISBLK(statbuf.st_mode) || S_ISCHR(statbuf.st_mode)) {
format = (flags & OPT_SELINUX ?
" 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"
" S_Context: %C\n"
"Access: %x\n" "Modify: %y\n" "Change: %z\n":
" 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 = (flags & OPT_SELINUX ?
" 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"
"S_Context: %C\n"
"Access: %x\n" "Modify: %y\n" "Change: %z\n":
" 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");
}
}
#endif
}
print_it(format, filename, print_stat, &statbuf USE_SELINUX(, scontext));
#else /* FEATURE_STAT_FORMAT */
if (flags & OPT_TERSE) {
printf("%s %ju %ju %lx %lu %lu %jx %ju %lu %lx %lx %lu %lu %lu %lu\n",
printf("%s %ju %ju %lx %lu %lu %jx %ju %lu %lx %lx %lu %lu %lu %lu"
SKIP_SELINUX("\n"),
filename,
(uintmax_t) (statbuf.st_size),
(uintmax_t) statbuf.st_blocks,
@ -466,6 +588,12 @@ static int do_stat(char const *filename, char const *format)
(unsigned long int) statbuf.st_ctime,
(unsigned long int) statbuf.st_blksize
);
#if ENABLE_SELINUX
if (flags & OPT_SELINUX)
printf(" %lc\n", *scontext);
else
putchar('\n');
#endif
} else {
char *linkname = NULL;
@ -499,19 +627,22 @@ static int do_stat(char const *filename, char const *format)
(unsigned long int) minor(statbuf.st_rdev));
else
putchar('\n');
printf("Access: (%04lo/%10.10s) Uid: (%5lu/%8s) Gid: (%5lu/%8s)\n"
"Access: %s\n" "Modify: %s\n" "Change: %s\n",
printf("Access: (%04lo/%10.10s) Uid: (%5lu/%8s) Gid: (%5lu/%8s)\n",
(unsigned long int) (statbuf.st_mode & (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)),
bb_mode_string(statbuf.st_mode),
(unsigned long int) statbuf.st_uid,
(pw_ent != 0L) ? pw_ent->pw_name : "UNKNOWN",
(unsigned long int) statbuf.st_gid,
(gw_ent != 0L) ? gw_ent->gr_name : "UNKNOWN",
(gw_ent != 0L) ? gw_ent->gr_name : "UNKNOWN");
#if ENABLE_SELINUX
printf(" S_Context: %lc\n", *scontext);
#endif
printf("Access: %s\n" "Modify: %s\n" "Change: %s\n",
human_time(statbuf.st_atime),
human_time(statbuf.st_mtime),
human_time(statbuf.st_ctime));
}
#endif
#endif /* FEATURE_STAT_FORMAT */
return 1;
}
@ -524,6 +655,7 @@ int stat_main(int argc, char **argv)
int (*statfunc)(char const *, char const *) = do_stat;
flags = getopt32(argc, argv, "ftL"
USE_SELINUX("Z")
USE_FEATURE_STAT_FORMAT("c:", &format)
);
@ -532,6 +664,11 @@ int stat_main(int argc, char **argv)
if (argc == optind) /* files */
bb_show_usage();
#if ENABLE_SELINUX
if (flags & OPT_SELINUX) {
selinux_or_die();
}
#endif /* ENABLE_SELINUX */
for (i = optind; i < argc; ++i)
ok &= statfunc(argv[i], format);