Author: avg Date: Wed Sep 20 07:23:50 2017 New Revision: 323791 URL: https://svnweb.freebsd.org/changeset/base/323791
Log: MFV r323790: 8567 Inconsistent return value in zpool_read_label illumos/illumos-gate@c861bfbd77c4ae780a0341e9cb6926d8b74341cf https://github.com/illumos/illumos-gate/commit/c861bfbd77c4ae780a0341e9cb6926d8b74341cf https://www.illumos.org/issues/8567 If fstat64 fails, pread64 fails, or the label is unintelligible, zpool_read_label will return 0. But if malloc fails, it will return -1. For consistency, it should always return -1 on failure or 0 on success. Reviewed by: Prakash Surya <prakash.su...@delphix.com> Reviewed by: Matthew Ahrens <mahr...@delphix.com> Approved by: Robert Mustacchi <r...@joyent.com> Author: Alan Somers <asom...@gmail.com> MFC after: 2 weeks Modified: head/cddl/contrib/opensolaris/cmd/zpool/zpool_main.c head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_import.c Directory Properties: head/cddl/contrib/opensolaris/ (props changed) head/cddl/contrib/opensolaris/lib/libzfs/ (props changed) Modified: head/cddl/contrib/opensolaris/cmd/zpool/zpool_main.c ============================================================================== --- head/cddl/contrib/opensolaris/cmd/zpool/zpool_main.c Wed Sep 20 07:18:09 2017 (r323790) +++ head/cddl/contrib/opensolaris/cmd/zpool/zpool_main.c Wed Sep 20 07:23:50 2017 (r323791) @@ -705,7 +705,7 @@ zpool_do_labelclear(int argc, char **argv) return (1); } - if (zpool_read_label(fd, &config) != 0 || config == NULL) { + if (zpool_read_label(fd, &config) != 0) { (void) fprintf(stderr, gettext("failed to read label from %s\n"), vdev); return (1); Modified: head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_import.c ============================================================================== --- head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_import.c Wed Sep 20 07:18:09 2017 (r323790) +++ head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_import.c Wed Sep 20 07:23:50 2017 (r323791) @@ -865,6 +865,7 @@ label_offset(uint64_t size, int l) /* * Given a file descriptor, read the label information and return an nvlist * describing the configuration, if there is one. + * Return 0 on success, or -1 on failure */ int zpool_read_label(int fd, nvlist_t **config) @@ -877,7 +878,7 @@ zpool_read_label(int fd, nvlist_t **config) *config = NULL; if (fstat64(fd, &statbuf) == -1) - return (0); + return (-1); size = P2ALIGN_TYPED(statbuf.st_size, sizeof (vdev_label_t), uint64_t); if ((label = malloc(sizeof (vdev_label_t))) == NULL) @@ -911,7 +912,7 @@ zpool_read_label(int fd, nvlist_t **config) free(label); *config = NULL; - return (0); + return (-1); } /* @@ -1148,7 +1149,7 @@ zpool_open_func(void *arg) } #endif /* illumos */ - if ((zpool_read_label(fd, &config)) != 0) { + if ((zpool_read_label(fd, &config)) != 0 && errno == ENOMEM) { (void) close(fd); (void) no_memory(rn->rn_hdl); return; @@ -1649,7 +1650,7 @@ zpool_in_use(libzfs_handle_t *hdl, int fd, pool_state_ *inuse = B_FALSE; - if (zpool_read_label(fd, &config) != 0) { + if (zpool_read_label(fd, &config) != 0 && errno == ENOMEM) { (void) no_memory(hdl); return (-1); } _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
