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SUSE:SLE-12-SP2:GA
util-linux.3352
util-linux-libmount-fsroot-cleanup.patch
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File util-linux-libmount-fsroot-cleanup.patch of Package util-linux.3352
From cc06a01ec551ed2bcd397a5097165b4434179b34 Mon Sep 17 00:00:00 2001 From: Karel Zak <kzak@redhat.com> Date: Tue, 10 Mar 2015 13:35:56 +0100 Subject: [PATCH] libmount: cleanup fs root detection code Signed-off-by: Karel Zak <kzak@redhat.com> --- libmount/src/mountP.h | 5 ---- libmount/src/tab.c | 32 ++++++++++++++++++++----- libmount/src/utils.c | 34 --------------------------- tests/expected/libmount/utils-fs-root | 1 - tests/expected/libmount/utils-fs-root-subdir | 1 - tests/expected/libmount/utils-fs-root-subdir2 | 1 - tests/ts/libmount/utils | 12 ---------- 7 files changed, 26 insertions(+), 60 deletions(-) delete mode 100644 tests/expected/libmount/utils-fs-root delete mode 100644 tests/expected/libmount/utils-fs-root-subdir delete mode 100644 tests/expected/libmount/utils-fs-root-subdir2 Index: util-linux-2.25/libmount/src/mountP.h =================================================================== --- util-linux-2.25.orig/libmount/src/mountP.h +++ util-linux-2.25/libmount/src/mountP.h @@ -97,7 +97,6 @@ extern int mnt_get_uid(const char *usern extern int mnt_get_gid(const char *groupname, gid_t *gid); extern int mnt_in_group(gid_t gid); -extern char *mnt_get_fs_root(const char *path, const char *mountpoint); extern int mnt_open_uniq_filename(const char *filename, char **name); extern int mnt_has_regular_utab(const char **utab, int *writable); @@ -113,10 +112,6 @@ extern int mnt_table_set_parser_fltrcb( int (*cb)(struct libmnt_fs *, void *), void *data); -extern struct libmnt_fs *mnt_table_get_fs_root(struct libmnt_table *tb, - struct libmnt_fs *fs, - unsigned long mountflags, - char **fsroot); extern int __mnt_table_parse_mtab(struct libmnt_table *tb, const char *filename, struct libmnt_table *u_tb); Index: util-linux-2.25/libmount/src/tab.c =================================================================== --- util-linux-2.25.orig/libmount/src/tab.c +++ util-linux-2.25/libmount/src/tab.c @@ -47,6 +47,7 @@ #include "strutils.h" #include "loopdev.h" #include "fileutils.h" +#include "canonicalize.h" static int is_mountinfo(struct libmnt_table *tb) { @@ -1219,6 +1220,20 @@ struct libmnt_fs *mnt_table_find_devno(s return NULL; } +static char *remove_mountpoint_from_path(const char *path, const char *mnt) +{ + char *res; + const char *p; + size_t sz; + + sz = strlen(mnt); + p = sz > 1 ? path + sz : path; + + res = *p ? strdup(p) : strdup("/"); + DBG(UTILS, ul_debug("%s fs-root is %s", path, res)); + return res; +} + /* * tb: /proc/self/mountinfo * fs: filesystem @@ -1238,7 +1253,8 @@ struct libmnt_fs *mnt_table_get_fs_root( unsigned long mountflags, char **fsroot) { - char *root = NULL, *mnt = NULL; + char *root = NULL; + const char *mnt = NULL; const char *fstype; struct libmnt_fs *src_fs = NULL; @@ -1256,10 +1272,15 @@ struct libmnt_fs *mnt_table_get_fs_root( DBG(TAB, ul_debug("fs-root for bind")); src = xsrc = mnt_resolve_spec(mnt_fs_get_source(fs), tb->cache); - if (src) - mnt = mnt_get_mountpoint(src); + if (src) { + struct libmnt_fs *fs = mnt_table_find_mountpoint(tb, + src, MNT_ITER_BACKWARD); + if (fs) + mnt = mnt_fs_get_target(fs); + } + if (mnt) - root = mnt_get_fs_root(src, mnt); + root = remove_mountpoint_from_path(src, mnt); if (xsrc && !tb->cache) { free(xsrc); @@ -1326,11 +1347,9 @@ dflt: DBG(TAB, ul_debug("FS root result: %s", root)); - free(mnt); return src_fs; err: free(root); - free(mnt); return NULL; } @@ -1764,6 +1783,7 @@ done: return rc; } + int main(int argc, char *argv[]) { struct libmnt_test tss[] = { Index: util-linux-2.25/libmount/src/utils.c =================================================================== --- util-linux-2.25.orig/libmount/src/utils.c +++ util-linux-2.25/libmount/src/utils.c @@ -1007,28 +1007,6 @@ err: return NULL; } -char *mnt_get_fs_root(const char *path, const char *mnt) -{ - char *m = (char *) mnt, *res; - const char *p; - size_t sz; - - if (!m) - m = mnt_get_mountpoint(path); - if (!m) - return NULL; - - sz = strlen(m); - p = sz > 1 ? path + sz : path; - - if (m != mnt) - free(m); - - res = *p ? strdup(p) : strdup("/"); - DBG(UTILS, ul_debug("%s fs-root is %s", path, res)); - return res; -} - /* * Search for @name kernel command parametr. * @@ -1159,17 +1137,6 @@ int test_mountpoint(struct libmnt_test * return 0; } -int test_fsroot(struct libmnt_test *ts, int argc, char *argv[]) -{ - char *path = canonicalize_path(argv[1]), - *mnt = path ? mnt_get_fs_root(path, NULL) : NULL; - - printf("%s: %s\n", argv[1], mnt ? : "unknown"); - free(mnt); - free(path); - return 0; -} - int test_filesystems(struct libmnt_test *ts, int argc, char *argv[]) { char **filesystems = NULL; @@ -1260,7 +1227,6 @@ int main(int argc, char *argv[]) { "--ends-with", test_endswith, "<string> <prefix>" }, { "--append-string", test_appendstr, "<string> <appendix>" }, { "--mountpoint", test_mountpoint, "<path>" }, - { "--fs-root", test_fsroot, "<path>" }, { "--cd-parent", test_chdir, "<path>" }, { "--kernel-cmdline",test_kernel_cmdline, "<option> | <option>=" }, { "--mkdir", test_mkdir, "<path>" }, Index: util-linux-2.25/tests/expected/libmount/utils-fs-root =================================================================== --- util-linux-2.25.orig/tests/expected/libmount/utils-fs-root +++ /dev/null @@ -1 +0,0 @@ -/proc: / Index: util-linux-2.25/tests/expected/libmount/utils-fs-root-subdir =================================================================== --- util-linux-2.25.orig/tests/expected/libmount/utils-fs-root-subdir +++ /dev/null @@ -1 +0,0 @@ -/proc/sys/kernel: /sys/kernel Index: util-linux-2.25/tests/expected/libmount/utils-fs-root-subdir2 =================================================================== --- util-linux-2.25.orig/tests/expected/libmount/utils-fs-root-subdir2 +++ /dev/null @@ -1 +0,0 @@ -/etc: /etc Index: util-linux-2.25/tests/ts/libmount/utils =================================================================== --- util-linux-2.25.orig/tests/ts/libmount/utils +++ util-linux-2.25/tests/ts/libmount/utils @@ -64,18 +64,6 @@ ts_init_subtest "mountpoint-root" ts_valgrind $TESTPROG --mountpoint / &> $TS_OUTPUT ts_finalize_subtest -ts_init_subtest "fs-root" -ts_valgrind $TESTPROG --fs-root /proc &> $TS_OUTPUT -ts_finalize_subtest - -ts_init_subtest "fs-root-subdir" -ts_valgrind $TESTPROG --fs-root /proc/sys/kernel &> $TS_OUTPUT -ts_finalize_subtest - -ts_init_subtest "fs-root-subdir2" -ts_valgrind $TESTPROG --fs-root /etc &> $TS_OUTPUT -ts_finalize_subtest - ts_init_subtest "kernel-cmdline" export LIBMOUNT_KERNEL_CMDLINE="$TS_SELF/files/kernel_cmdline" ts_valgrind $TESTPROG --kernel-cmdline selinux= &>> $TS_OUTPUT
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