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opendir() mocks need to search for decorated function with $INODE64 suffix, like stat mocks. Reviewed-by: Michal Privoznik <mprivozn@redhat.com> Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
219 lines
4.9 KiB
C
219 lines
4.9 KiB
C
/*
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* virfilewrapper.c: Wrapper for universal file access
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#ifndef WIN32
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# include <fcntl.h>
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# include "viralloc.h"
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# include "virfile.h"
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# include "virfilewrapper.h"
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# include "virmock.h"
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# include "virstring.h"
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/* Mapping for prefix overrides */
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static size_t noverrides;
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static const char **overrides;
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/* nprefixes == noverrides, but two variables make it easier to use
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* VIR_*_ELEMENT macros */
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static size_t nprefixes;
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static const char **prefixes;
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/* TODO: callbacks */
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static int (*real_open)(const char *path, int flags, ...);
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static FILE *(*real_fopen)(const char *path, const char *mode);
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static int (*real_access)(const char *path, int mode);
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static int (*real_mkdir)(const char *path, mode_t mode);
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static DIR *(*real_opendir)(const char *path);
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static int (*real_execv)(const char *path, char *const argv[]);
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static int (*real_execve)(const char *path, char *const argv[], char *const envp[]);
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static void init_syms(void)
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{
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if (real_fopen)
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return;
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VIR_MOCK_REAL_INIT(fopen);
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VIR_MOCK_REAL_INIT(access);
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VIR_MOCK_REAL_INIT(mkdir);
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VIR_MOCK_REAL_INIT(open);
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# ifdef __APPLE__
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VIR_MOCK_REAL_INIT_ALIASED(opendir, "opendir$INODE64");
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# else
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VIR_MOCK_REAL_INIT(opendir);
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# endif
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VIR_MOCK_REAL_INIT(execv);
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VIR_MOCK_REAL_INIT(execve);
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}
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void
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virFileWrapperAddPrefix(const char *prefix,
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const char *override)
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{
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/* Both parameters are mandatory */
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if (!prefix || !override) {
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fprintf(stderr, "Attempt to add invalid path override\n");
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abort();
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}
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init_syms();
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if (VIR_APPEND_ELEMENT_QUIET(prefixes, nprefixes, prefix) < 0 ||
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VIR_APPEND_ELEMENT_QUIET(overrides, noverrides, override) < 0) {
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VIR_FREE(prefixes);
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VIR_FREE(overrides);
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fprintf(stderr, "Unable to add path override for '%s'\n", prefix);
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abort();
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}
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}
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void
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virFileWrapperRemovePrefix(const char *prefix)
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{
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size_t i = 0;
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for (i = 0; i < noverrides; i++) {
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if (STREQ(prefixes[i], prefix))
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break;
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}
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if (i == noverrides)
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return;
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VIR_DELETE_ELEMENT(overrides, i, noverrides);
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VIR_DELETE_ELEMENT(prefixes, i, nprefixes);
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}
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void
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virFileWrapperClearPrefixes(void)
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{
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nprefixes = 0;
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noverrides = 0;
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VIR_FREE(prefixes);
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VIR_FREE(overrides);
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}
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# include "virmockstathelpers.c"
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int
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virMockStatRedirect(const char *path, char **newpath)
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{
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size_t i = 0;
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for (i = 0; i < noverrides; i++) {
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const char *tmp = STRSKIP(path, prefixes[i]);
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if (!tmp)
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continue;
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*newpath = g_strdup_printf("%s%s", overrides[i], tmp);
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break;
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}
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return 0;
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}
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# define PATH_OVERRIDE(newpath, path) \
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do { \
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init_syms(); \
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\
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if (virMockStatRedirect(path, &newpath) < 0) \
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abort(); \
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} while (0)
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FILE *fopen(const char *path, const char *mode)
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{
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g_autofree char *newpath = NULL;
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PATH_OVERRIDE(newpath, path);
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return real_fopen(newpath ? newpath : path, mode);
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}
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int access(const char *path, int mode)
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{
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g_autofree char *newpath = NULL;
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PATH_OVERRIDE(newpath, path);
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return real_access(newpath ? newpath : path, mode);
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}
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# ifdef __APPLE__
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int _open(const char *path, int flags, ...) __asm("_open");
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int _open(const char *path, int flags, ...)
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# else
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int open(const char *path, int flags, ...)
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# endif
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{
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g_autofree char *newpath = NULL;
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va_list ap;
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mode_t mode = 0;
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PATH_OVERRIDE(newpath, path);
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/* The mode argument is mandatory when O_CREAT is set in flags,
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* otherwise the argument is ignored.
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*/
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if (flags & O_CREAT) {
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va_start(ap, flags);
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mode = (mode_t) va_arg(ap, int);
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va_end(ap);
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}
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return real_open(newpath ? newpath : path, flags, mode);
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}
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DIR *opendir(const char *path)
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{
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g_autofree char *newpath = NULL;
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PATH_OVERRIDE(newpath, path);
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return real_opendir(newpath ? newpath : path);
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}
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int execv(const char *path, char *const argv[])
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{
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g_autofree char *newpath = NULL;
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PATH_OVERRIDE(newpath, path);
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return real_execv(newpath ? newpath : path, argv);
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}
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int execve(const char *path, char *const argv[], char *const envp[])
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{
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g_autofree char *newpath = NULL;
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PATH_OVERRIDE(newpath, path);
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return real_execve(newpath ? newpath : path, argv, envp);
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}
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#endif
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