From a36c6beb5f5a2a02f805bcbf6303e3c6ab908c95 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Fri, 15 Mar 2019 18:10:05 +0100 Subject: [PATCH 009/163] file-posix: Use error API properly RH-Author: Kevin Wolf Message-id: <20190315181010.14964-10-kwolf@redhat.com> Patchwork-id: 84886 O-Subject: [RHEL-7.7 qemu-kvm-rhev PATCH 09/14] file-posix: Use error API properly Bugzilla: 1685989 RH-Acked-by: John Snow RH-Acked-by: Stefan Hajnoczi RH-Acked-by: Miroslav Rezanina From: Fam Zheng Use error_report for situations that affect user operation (i.e. we're actually returning error), and warn_report/warn_report_err when some less critical error happened but the user operation can still carry on. For raw_normalize_devicepath, add Error parameter to propagate to its callers. Suggested-by: Markus Armbruster Signed-off-by: Fam Zheng Signed-off-by: Kevin Wolf (cherry picked from commit db0754df88e3ca4797539c1edbde596d871b64b6) Signed-off-by: Kevin Wolf Signed-off-by: Miroslav Rezanina --- block/file-posix.c | 39 ++++++++++++++++----------------------- 1 file changed, 16 insertions(+), 23 deletions(-) diff --git a/block/file-posix.c b/block/file-posix.c index deecf58..419781c 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -207,7 +207,7 @@ static int cdrom_reopen(BlockDriverState *bs); #endif #if defined(__NetBSD__) -static int raw_normalize_devicepath(const char **filename) +static int raw_normalize_devicepath(const char **filename, Error **errp) { static char namebuf[PATH_MAX]; const char *dp, *fname; @@ -216,8 +216,7 @@ static int raw_normalize_devicepath(const char **filename) fname = *filename; dp = strrchr(fname, '/'); if (lstat(fname, &sb) < 0) { - fprintf(stderr, "%s: stat failed: %s\n", - fname, strerror(errno)); + error_setg_errno(errp, errno, "%s: stat failed", fname); return -errno; } @@ -231,14 +230,13 @@ static int raw_normalize_devicepath(const char **filename) snprintf(namebuf, PATH_MAX, "%.*s/r%s", (int)(dp - fname), fname, dp + 1); } - fprintf(stderr, "%s is a block device", fname); *filename = namebuf; - fprintf(stderr, ", using %s\n", *filename); + warn_report("%s is a block device, using %s", fname, *filename); return 0; } #else -static int raw_normalize_devicepath(const char **filename) +static int raw_normalize_devicepath(const char **filename, Error **errp) { return 0; } @@ -458,9 +456,8 @@ static int raw_open_common(BlockDriverState *bs, QDict *options, filename = qemu_opt_get(opts, "filename"); - ret = raw_normalize_devicepath(&filename); + ret = raw_normalize_devicepath(&filename, errp); if (ret != 0) { - error_setg_errno(errp, -ret, "Could not normalize device path"); goto fail; } @@ -489,11 +486,10 @@ static int raw_open_common(BlockDriverState *bs, QDict *options, case ON_OFF_AUTO_ON: s->use_lock = true; if (!qemu_has_ofd_lock()) { - fprintf(stderr, - "File lock requested but OFD locking syscall is " - "unavailable, falling back to POSIX file locks.\n" - "Due to the implementation, locks can be lost " - "unexpectedly.\n"); + warn_report("File lock requested but OFD locking syscall is " + "unavailable, falling back to POSIX file locks"); + error_printf("Due to the implementation, locks can be lost " + "unexpectedly.\n"); } break; case ON_OFF_AUTO_OFF: @@ -821,7 +817,7 @@ static int raw_handle_perm_lock(BlockDriverState *bs, /* Theoretically the above call only unlocks bytes and it cannot * fail. Something weird happened, report it. */ - error_report_err(local_err); + warn_report_err(local_err); } break; case RAW_PL_COMMIT: @@ -831,7 +827,7 @@ static int raw_handle_perm_lock(BlockDriverState *bs, /* Theoretically the above call only unlocks bytes and it cannot * fail. Something weird happened, report it. */ - error_report_err(local_err); + warn_report_err(local_err); } break; } @@ -891,10 +887,8 @@ static int raw_reopen_prepare(BDRVReopenState *state, /* If we cannot use fcntl, or fcntl failed, fall back to qemu_open() */ if (rs->fd == -1) { const char *normalized_filename = state->bs->filename; - ret = raw_normalize_devicepath(&normalized_filename); - if (ret < 0) { - error_setg_errno(errp, -ret, "Could not normalize device path"); - } else { + ret = raw_normalize_devicepath(&normalized_filename, errp); + if (ret >= 0) { assert(!(rs->open_flags & O_CREAT)); rs->fd = qemu_open(normalized_filename, rs->open_flags); if (rs->fd == -1) { @@ -1742,7 +1736,7 @@ static int aio_worker(void *arg) ret = handle_aiocb_truncate(aiocb); break; default: - fprintf(stderr, "invalid aio request (0x%x)\n", aiocb->aio_type); + error_report("invalid aio request (0x%x)", aiocb->aio_type); ret = -EINVAL; break; } @@ -2233,7 +2227,7 @@ out_unlock: * not mean the whole creation operation has failed. So * report it the user for their convenience, but do not report * it to the caller. */ - error_report_err(local_err); + warn_report_err(local_err); } out_close: @@ -2986,9 +2980,8 @@ static int coroutine_fn hdev_co_create_opts(const char *filename, QemuOpts *opts (void)has_prefix; - ret = raw_normalize_devicepath(&filename); + ret = raw_normalize_devicepath(&filename, errp); if (ret < 0) { - error_setg_errno(errp, -ret, "Could not normalize device path"); return ret; } -- 1.8.3.1