public inbox for lvm2-cvs@sourceware.org help / color / mirror / Atom feed
From: mornfall@sourceware.org To: lvm-devel@redhat.com, lvm2-cvs@sourceware.org Subject: LVM2/liblvm lvm2app.h lvm_lv.c lvm_misc.c lvm_ ... Date: Wed, 17 Nov 2010 20:09:00 -0000 [thread overview] Message-ID: <20101117200943.7917.qmail@sourceware.org> (raw) CVSROOT: /cvs/lvm2 Module name: LVM2 Changes by: mornfall@sourceware.org 2010-11-17 20:09:42 Modified files: liblvm : lvm2app.h lvm_lv.c lvm_misc.c lvm_misc.h lvm_pv.c lvm_vg.c Log message: Add lvm2app function to query lvseg properties. Signed-off-by: Dave Wysochanski <wysochanski@pobox.com> Reviewed-by: Petr Rockai <prockai@redhat.com> Patches: http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/lvm2app.h.diff?cvsroot=lvm2&r1=1.25&r2=1.26 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/lvm_lv.c.diff?cvsroot=lvm2&r1=1.29&r2=1.30 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/lvm_misc.c.diff?cvsroot=lvm2&r1=1.4&r2=1.5 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/lvm_misc.h.diff?cvsroot=lvm2&r1=1.4&r2=1.5 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/lvm_pv.c.diff?cvsroot=lvm2&r1=1.14&r2=1.15 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/liblvm/lvm_vg.c.diff?cvsroot=lvm2&r1=1.46&r2=1.47 --- LVM2/liblvm/lvm2app.h 2010/11/17 20:07:01 1.25 +++ LVM2/liblvm/lvm2app.h 2010/11/17 20:09:42 1.26 @@ -1132,6 +1132,45 @@ struct lvm_property_value lvm_lv_get_property(const lv_t lv, const char *name); /** + * Get the value of a LV segment property + * + * \memberof lv_t + * + * \param lvseg + * Logical volume segment handle. + * + * \param name + * Name of property to query. See lvs man page for full list of properties + * that may be queried. + * + * The memory allocated for a string property value is tied to the vg_t + * handle and will be released when lvm_vg_close() is called. + * + * Example: + * lvm_property_value v; + * char *prop_name = "seg_start_pe"; + * + * v = lvm_lvseg_get_property(lvseg, prop_name); + * if (lvm_errno(libh) || !v.is_valid) { + * // handle error + * printf("Invalid property name or unable to query" + * "'%s'.\n", prop_name); + * return; + * } + * if (v.is_string) + * printf(", value = %s\n", v.value.string); + * else + * printf(", value = %"PRIu64"\n", v.value.integer); + * + * \return + * lvm_property_value structure that will contain the current + * value of the property. Caller should check lvm_errno() as well + * as 'is_valid' flag before using the value. + */ +struct lvm_property_value lvm_lvseg_get_property(const lvseg_t lvseg, + const char *name); + +/** * Get the current activation state of a logical volume. * * \memberof lv_t --- LVM2/liblvm/lvm_lv.c 2010/11/17 20:07:01 1.29 +++ LVM2/liblvm/lvm_lv.c 2010/11/17 20:09:42 1.30 @@ -50,7 +50,13 @@ struct lvm_property_value lvm_lv_get_property(const lv_t lv, const char *name) { - return get_property(NULL, NULL, lv, name); + return get_property(NULL, NULL, lv, NULL, name); +} + +struct lvm_property_value lvm_lvseg_get_property(const lvseg_t lvseg, + const char *name) +{ + return get_property(NULL, NULL, NULL, lvseg, name); } uint64_t lvm_lv_is_active(const lv_t lv) --- LVM2/liblvm/lvm_misc.c 2010/11/17 19:16:05 1.4 +++ LVM2/liblvm/lvm_misc.c 2010/11/17 20:09:42 1.5 @@ -46,7 +46,8 @@ } struct lvm_property_value get_property(const pv_t pv, const vg_t vg, - const lv_t lv, const char *name) + const lv_t lv, const lvseg_t lvseg, + const char *name) { struct lvm_property_type prop; struct lvm_property_value v; @@ -67,6 +68,11 @@ v.is_valid = 0; return v; } + } else if (lvseg) { + if (!lvseg_get_property(lvseg, &prop)) { + v.is_valid = 0; + return v; + } } v.is_settable = prop.is_settable; v.is_string = prop.is_string; --- LVM2/liblvm/lvm_misc.h 2010/11/17 19:16:05 1.4 +++ LVM2/liblvm/lvm_misc.h 2010/11/17 20:09:42 1.5 @@ -18,7 +18,8 @@ struct dm_list *tag_list_copy(struct dm_pool *p, struct dm_list *tag_list); struct lvm_property_value get_property(const pv_t pv, const vg_t vg, - const lv_t lv, const char *name); + const lv_t lv, const lvseg_t lvseg, + const char *name); int set_property(const pv_t pv, const vg_t vg, const lv_t lv, const char *name, struct lvm_property_value *value); --- LVM2/liblvm/lvm_pv.c 2010/10/25 14:08:55 1.14 +++ LVM2/liblvm/lvm_pv.c 2010/11/17 20:09:42 1.15 @@ -51,7 +51,7 @@ struct lvm_property_value lvm_pv_get_property(const pv_t pv, const char *name) { - return get_property(pv, NULL, NULL, name); + return get_property(pv, NULL, NULL, NULL, name); } int lvm_pv_resize(const pv_t pv, uint64_t new_size) --- LVM2/liblvm/lvm_vg.c 2010/11/17 19:16:05 1.46 +++ LVM2/liblvm/lvm_vg.c 2010/11/17 20:09:42 1.47 @@ -338,7 +338,7 @@ struct lvm_property_value lvm_vg_get_property(const vg_t vg, const char *name) { - return get_property(NULL, vg, NULL, name); + return get_property(NULL, vg, NULL, NULL, name); } int lvm_vg_set_property(const vg_t vg, const char *name,
next reply other threads:[~2010-11-17 20:09 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2010-11-17 20:09 mornfall [this message] 2010-11-17 20:12 mornfall
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20101117200943.7917.qmail@sourceware.org \ --to=mornfall@sourceware.org \ --cc=lvm-devel@redhat.com \ --cc=lvm2-cvs@sourceware.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).