commit: 436473bc2173499ae274d0f50111d1e355006caf From: Ben Hutchings <[email protected]> Date: Wed, 5 Sep 2012 14:37:37 -0700 Subject: tools/hv: Check for read/write errors
hv_kvp_daemon currently does not check whether fread() or fwrite() succeed. Add the necessary checks. Also, remove the incorrect use of feof() before fread(). Signed-off-by: Ben Hutchings <[email protected]> Signed-off-by: K. Y. Srinivasan <[email protected]> Cc: [email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]> --- tools/hv/hv_kvp_daemon.c | 22 +++++++++++++++++++--- 1 files changed, 19 insertions(+), 3 deletions(-) diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index 01b3ca5..3922abc 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -160,7 +160,12 @@ static void kvp_update_file(int pool) sizeof(struct kvp_record), kvp_file_info[pool].num_records, filep); - fclose(filep); + if (ferror(filep) || fclose(filep)) { + kvp_release_lock(pool); + syslog(LOG_ERR, "Failed to write file, pool: %d", pool); + exit(EXIT_FAILURE); + } + kvp_release_lock(pool); } @@ -181,12 +186,17 @@ static void kvp_update_mem_state(int pool) syslog(LOG_ERR, "Failed to open file, pool: %d", pool); exit(EXIT_FAILURE); } - while (!feof(filep)) { + for (;;) { readp = &record[records_read]; records_read += fread(readp, sizeof(struct kvp_record), ENTRIES_PER_BLOCK * num_blocks, filep); + if (ferror(filep)) { + syslog(LOG_ERR, "Failed to read file, pool: %d", pool); + exit(EXIT_FAILURE); + } + if (!feof(filep)) { /* * We have more data to read. @@ -249,12 +259,18 @@ static int kvp_file_init(void) fclose(filep); return 1; } - while (!feof(filep)) { + for (;;) { readp = &record[records_read]; records_read += fread(readp, sizeof(struct kvp_record), ENTRIES_PER_BLOCK, filep); + if (ferror(filep)) { + syslog(LOG_ERR, "Failed to read file, pool: %d", + i); + exit(EXIT_FAILURE); + } + if (!feof(filep)) { /* * We have more data to read. -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
