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bh=+UjO/ht9tVlihuhzYU+Y1fKToV8y7egqHaB0TByGeBY=; b=i9jb78ih8x3BYh8IYfActOrsz3aylgDHf97cudBJfmvo5o+1iNei7R9PRiZNU1ze2WEKBW CTPr8FS11wbj1+cIGiOZ8wPXS7Qw4aV74VZOpYoWlFk2+s1QqgT5bigTs33Y5G7e2viLqY yTnDRBRxkCqWDyd9HtEK6C64e6viNgU= X-MC-Unique: xlR28XOMO9a6guFqQnSyFQ-1 From: Stefan Hajnoczi To: qemu-devel@nongnu.org Cc: , Peter Maydell , Kevin Wolf , Hanna Reitz , Stefan Hajnoczi , Sam Li Subject: [PATCH] qemu-io: add cvtnum() error handling for zone commands Date: Tue, 7 May 2024 14:05:58 -0400 Message-ID: <20240507180558.377233-1-stefanha@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.4 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.581, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1715105232947100003 Content-Type: text/plain; charset="utf-8" cvtnum() parses positive int64_t values and returns a negative errno on failure. Print errors and return early when cvtnum() fails. While we're at it, also reject nr_zones values greater or equal to 2^32 since they cannot be represented. Reported-by: Peter Maydell Cc: Sam Li Signed-off-by: Stefan Hajnoczi Reviewed-by: Sam Li --- qemu-io-cmds.c | 48 +++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 47 insertions(+), 1 deletion(-) diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c index f5d7202a13..e2fab57183 100644 --- a/qemu-io-cmds.c +++ b/qemu-io-cmds.c @@ -1739,12 +1739,26 @@ static int zone_report_f(BlockBackend *blk, int arg= c, char **argv) { int ret; int64_t offset; + int64_t val; unsigned int nr_zones; =20 ++optind; offset =3D cvtnum(argv[optind]); + if (offset < 0) { + print_cvtnum_err(offset, argv[optind]); + return offset; + } ++optind; - nr_zones =3D cvtnum(argv[optind]); + val =3D cvtnum(argv[optind]); + if (val < 0) { + print_cvtnum_err(val, argv[optind]); + return val; + } + if (val > UINT_MAX) { + printf("Number of zones must be less than 2^32\n"); + return -ERANGE; + } + nr_zones =3D val; =20 g_autofree BlockZoneDescriptor *zones =3D NULL; zones =3D g_new(BlockZoneDescriptor, nr_zones); @@ -1780,8 +1794,16 @@ static int zone_open_f(BlockBackend *blk, int argc, = char **argv) int64_t offset, len; ++optind; offset =3D cvtnum(argv[optind]); + if (offset < 0) { + print_cvtnum_err(offset, argv[optind]); + return offset; + } ++optind; len =3D cvtnum(argv[optind]); + if (len < 0) { + print_cvtnum_err(len, argv[optind]); + return len; + } ret =3D blk_zone_mgmt(blk, BLK_ZO_OPEN, offset, len); if (ret < 0) { printf("zone open failed: %s\n", strerror(-ret)); @@ -1805,8 +1827,16 @@ static int zone_close_f(BlockBackend *blk, int argc,= char **argv) int64_t offset, len; ++optind; offset =3D cvtnum(argv[optind]); + if (offset < 0) { + print_cvtnum_err(offset, argv[optind]); + return offset; + } ++optind; len =3D cvtnum(argv[optind]); + if (len < 0) { + print_cvtnum_err(len, argv[optind]); + return len; + } ret =3D blk_zone_mgmt(blk, BLK_ZO_CLOSE, offset, len); if (ret < 0) { printf("zone close failed: %s\n", strerror(-ret)); @@ -1830,8 +1860,16 @@ static int zone_finish_f(BlockBackend *blk, int argc= , char **argv) int64_t offset, len; ++optind; offset =3D cvtnum(argv[optind]); + if (offset < 0) { + print_cvtnum_err(offset, argv[optind]); + return offset; + } ++optind; len =3D cvtnum(argv[optind]); + if (len < 0) { + print_cvtnum_err(len, argv[optind]); + return len; + } ret =3D blk_zone_mgmt(blk, BLK_ZO_FINISH, offset, len); if (ret < 0) { printf("zone finish failed: %s\n", strerror(-ret)); @@ -1855,8 +1893,16 @@ static int zone_reset_f(BlockBackend *blk, int argc,= char **argv) int64_t offset, len; ++optind; offset =3D cvtnum(argv[optind]); + if (offset < 0) { + print_cvtnum_err(offset, argv[optind]); + return offset; + } ++optind; len =3D cvtnum(argv[optind]); + if (len < 0) { + print_cvtnum_err(len, argv[optind]); + return len; + } ret =3D blk_zone_mgmt(blk, BLK_ZO_RESET, offset, len); if (ret < 0) { printf("zone reset failed: %s\n", strerror(-ret)); --=20 2.45.0