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Fix pkg symlink removal introduced in the two phase package removal feature.

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This commit is contained in:
Juan RP 2014-02-26 10:05:19 +01:00
parent 8c47021ec3
commit 9101241b20
3 changed files with 39 additions and 1 deletions
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4
NEWS
View File

@ -1,5 +1,9 @@
xbps-0.33 (???):
* While checking file permissions for package files removal, make sure
to not dereference symbolic links, because a symlink might point to
a file in the rootfs, which won't have the same uid/gid.
* Fixed issue #31: https://github.com/voidlinux/xbps/issues/31
* New configuration file format with a custom C parser, simpler

5
lib/package_remove.c
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@ -30,6 +30,8 @@
#include <errno.h>
#include <dirent.h>
#include <libgen.h>
#include <fcntl.h>
#include <unistd.h>
#include "xbps_api_impl.h"
@ -44,6 +46,7 @@ check_remove_pkg_files(struct xbps_handle *xhp,
const char *file;
char *path = NULL;
bool fail = false;
int fd = 0;
for (uint8_t i = 0; i < __arraycount(objs); i++) {
array = xbps_dictionary_get(pkgd, objs[i]);
@ -57,7 +60,7 @@ check_remove_pkg_files(struct xbps_handle *xhp,
while ((obj = xbps_object_iterator_next(iter))) {
xbps_dictionary_get_cstring_nocopy(obj, "file", &file);
path = xbps_xasprintf("%s/%s", xhp->rootdir, file);
if (access(path, W_OK) == -1) {
if (faccessat(fd, path, W_OK, AT_SYMLINK_NOFOLLOW) == -1) {
if (errno != ENOENT) {
/*
* only bail out if something else than ENOENT

31
tests/xbps/libxbps/shell/remove_test.sh
View File

@ -67,7 +67,38 @@ remove_symlinks_body() {
atf_check_equal $rv 0
}
# 3rd test: make sure that symlinks to the rootfs are also removed.
atf_test_case remove_symlinks_from_root
remove_symlinks_from_root_head() {
atf_set "descr" "Tests for package removal: symlink from root test"
}
remove_symlinks_from_root_body() {
mkdir some_repo
mkdir -p pkg_A/bin
ln -sf /bin/bash pkg_A/bin/bash
ln -sf /bin/bash pkg_A/bin/sh
cd some_repo
xbps-create -A noarch -n A-1.0_1 -s "A pkg" ../pkg_A
atf_check_equal $? 0
xbps-rindex -a *.xbps
atf_check_equal $? 0
cd ..
xbps-install -r root -C null.conf --repository=$PWD/some_repo -y A
atf_check_equal $? 0
xbps-remove -r root -Ryv A
atf_check_equal $? 0
rv=0
if [ -h root/bin/bash -o -h root/bin/sh ]; then
rv=1
fi
atf_check_equal $rv 0
}
atf_init_test_cases() {
atf_add_test_case keep_base_symlinks
atf_add_test_case remove_symlinks
atf_add_test_case remove_symlinks_from_root
}