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-rw-r--r--otafault/ota_io.cpp174
1 files changed, 103 insertions, 71 deletions
diff --git a/otafault/ota_io.cpp b/otafault/ota_io.cpp
index 04458537b..9434ebea3 100644
--- a/otafault/ota_io.cpp
+++ b/otafault/ota_io.cpp
@@ -14,7 +14,9 @@
* limitations under the License.
*/
+#if defined (TARGET_INJECT_FAULTS)
#include <map>
+#endif
#include <errno.h>
#include <fcntl.h>
@@ -22,155 +24,185 @@
#include <sys/stat.h>
#include <unistd.h>
-#include "config.h"
#include "ota_io.h"
-static std::map<intptr_t, const char*> filename_cache;
-static std::string read_fault_file_name = "";
-static std::string write_fault_file_name = "";
-static std::string fsync_fault_file_name = "";
-
-static bool get_hit_file(const char* cached_path, std::string ffn) {
- return should_hit_cache()
- ? !strncmp(cached_path, OTAIO_CACHE_FNAME, strlen(cached_path))
- : !strncmp(cached_path, ffn.c_str(), strlen(cached_path));
-}
-
-void ota_set_fault_files() {
- if (should_fault_inject(OTAIO_READ)) {
- read_fault_file_name = fault_fname(OTAIO_READ);
- }
- if (should_fault_inject(OTAIO_WRITE)) {
- write_fault_file_name = fault_fname(OTAIO_WRITE);
- }
- if (should_fault_inject(OTAIO_FSYNC)) {
- fsync_fault_file_name = fault_fname(OTAIO_FSYNC);
- }
-}
+#if defined (TARGET_INJECT_FAULTS)
+static std::map<int, const char*> FilenameCache;
+static std::string FaultFileName =
+#if defined (TARGET_READ_FAULT)
+ TARGET_READ_FAULT;
+#elif defined (TARGET_WRITE_FAULT)
+ TARGET_WRITE_FAULT;
+#elif defined (TARGET_FSYNC_FAULT)
+ TARGET_FSYNC_FAULT;
+#endif // defined (TARGET_READ_FAULT)
+#endif // defined (TARGET_INJECT_FAULTS)
bool have_eio_error = false;
int ota_open(const char* path, int oflags) {
+#if defined (TARGET_INJECT_FAULTS)
// Let the caller handle errors; we do not care if open succeeds or fails
int fd = open(path, oflags);
- filename_cache[fd] = path;
+ FilenameCache[fd] = path;
return fd;
+#else
+ return open(path, oflags);
+#endif
}
int ota_open(const char* path, int oflags, mode_t mode) {
+#if defined (TARGET_INJECT_FAULTS)
int fd = open(path, oflags, mode);
- filename_cache[fd] = path;
- return fd; }
+ FilenameCache[fd] = path;
+ return fd;
+#else
+ return open(path, oflags, mode);
+#endif
+}
FILE* ota_fopen(const char* path, const char* mode) {
+#if defined (TARGET_INJECT_FAULTS)
FILE* fh = fopen(path, mode);
- filename_cache[(intptr_t)fh] = path;
+ FilenameCache[(intptr_t)fh] = path;
return fh;
+#else
+ return fopen(path, mode);
+#endif
}
int ota_close(int fd) {
- // descriptors can be reused, so make sure not to leave them in the cache
- filename_cache.erase(fd);
+#if defined (TARGET_INJECT_FAULTS)
+ // descriptors can be reused, so make sure not to leave them in the cahce
+ FilenameCache.erase(fd);
+#endif
return close(fd);
}
int ota_fclose(FILE* fh) {
- filename_cache.erase((intptr_t)fh);
+#if defined (TARGET_INJECT_FAULTS)
+ FilenameCache.erase((intptr_t)fh);
+#endif
return fclose(fh);
}
size_t ota_fread(void* ptr, size_t size, size_t nitems, FILE* stream) {
- if (should_fault_inject(OTAIO_READ)) {
- auto cached = filename_cache.find((intptr_t)stream);
- const char* cached_path = cached->second;
- if (cached != filename_cache.end() &&
- get_hit_file(cached_path, read_fault_file_name)) {
- read_fault_file_name = "";
- errno = EIO;
+#if defined (TARGET_READ_FAULT)
+ if (FilenameCache.find((intptr_t)stream) != FilenameCache.end()
+ && FilenameCache[(intptr_t)stream] == FaultFileName) {
+ FaultFileName = "";
+ errno = EIO;
+ have_eio_error = true;
+ return 0;
+ } else {
+ size_t status = fread(ptr, size, nitems, stream);
+ // If I/O error occurs, set the retry-update flag.
+ if (status != nitems && errno == EIO) {
have_eio_error = true;
- return 0;
}
+ return status;
}
+#else
size_t status = fread(ptr, size, nitems, stream);
if (status != nitems && errno == EIO) {
have_eio_error = true;
}
return status;
+#endif
}
ssize_t ota_read(int fd, void* buf, size_t nbyte) {
- if (should_fault_inject(OTAIO_READ)) {
- auto cached = filename_cache.find(fd);
- const char* cached_path = cached->second;
- if (cached != filename_cache.end()
- && get_hit_file(cached_path, read_fault_file_name)) {
- read_fault_file_name = "";
- errno = EIO;
+#if defined (TARGET_READ_FAULT)
+ if (FilenameCache.find(fd) != FilenameCache.end()
+ && FilenameCache[fd] == FaultFileName) {
+ FaultFileName = "";
+ errno = EIO;
+ have_eio_error = true;
+ return -1;
+ } else {
+ ssize_t status = read(fd, buf, nbyte);
+ if (status == -1 && errno == EIO) {
have_eio_error = true;
- return -1;
}
+ return status;
}
+#else
ssize_t status = read(fd, buf, nbyte);
if (status == -1 && errno == EIO) {
have_eio_error = true;
}
return status;
+#endif
}
size_t ota_fwrite(const void* ptr, size_t size, size_t count, FILE* stream) {
- if (should_fault_inject(OTAIO_WRITE)) {
- auto cached = filename_cache.find((intptr_t)stream);
- const char* cached_path = cached->second;
- if (cached != filename_cache.end() &&
- get_hit_file(cached_path, write_fault_file_name)) {
- write_fault_file_name = "";
- errno = EIO;
+#if defined (TARGET_WRITE_FAULT)
+ if (FilenameCache.find((intptr_t)stream) != FilenameCache.end()
+ && FilenameCache[(intptr_t)stream] == FaultFileName) {
+ FaultFileName = "";
+ errno = EIO;
+ have_eio_error = true;
+ return 0;
+ } else {
+ size_t status = fwrite(ptr, size, count, stream);
+ if (status != count && errno == EIO) {
have_eio_error = true;
- return 0;
}
+ return status;
}
+#else
size_t status = fwrite(ptr, size, count, stream);
if (status != count && errno == EIO) {
have_eio_error = true;
}
return status;
+#endif
}
ssize_t ota_write(int fd, const void* buf, size_t nbyte) {
- if (should_fault_inject(OTAIO_WRITE)) {
- auto cached = filename_cache.find(fd);
- const char* cached_path = cached->second;
- if (cached != filename_cache.end() &&
- get_hit_file(cached_path, write_fault_file_name)) {
- write_fault_file_name = "";
- errno = EIO;
+#if defined (TARGET_WRITE_FAULT)
+ if (FilenameCache.find(fd) != FilenameCache.end()
+ && FilenameCache[fd] == FaultFileName) {
+ FaultFileName = "";
+ errno = EIO;
+ have_eio_error = true;
+ return -1;
+ } else {
+ ssize_t status = write(fd, buf, nbyte);
+ if (status == -1 && errno == EIO) {
have_eio_error = true;
- return -1;
}
+ return status;
}
+#else
ssize_t status = write(fd, buf, nbyte);
if (status == -1 && errno == EIO) {
have_eio_error = true;
}
return status;
+#endif
}
int ota_fsync(int fd) {
- if (should_fault_inject(OTAIO_FSYNC)) {
- auto cached = filename_cache.find(fd);
- const char* cached_path = cached->second;
- if (cached != filename_cache.end() &&
- get_hit_file(cached_path, fsync_fault_file_name)) {
- fsync_fault_file_name = "";
- errno = EIO;
+#if defined (TARGET_FSYNC_FAULT)
+ if (FilenameCache.find(fd) != FilenameCache.end()
+ && FilenameCache[fd] == FaultFileName) {
+ FaultFileName = "";
+ errno = EIO;
+ have_eio_error = true;
+ return -1;
+ } else {
+ int status = fsync(fd);
+ if (status == -1 && errno == EIO) {
have_eio_error = true;
- return -1;
}
+ return status;
}
+#else
int status = fsync(fd);
if (status == -1 && errno == EIO) {
have_eio_error = true;
}
return status;
+#endif
}
-
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