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allocates these buffers in such way it adds memory page for each such buffer and size of unlock memory check will mismatch by 1 or 2 pages. This happens when we print or read lines without '\n' so these buffers are used. To avoid this extra allocation, use setvbuf to set these bufffers ahead. Signed-off-by: Zdenek Kabelac <zkabelac@redhat.com> Reviewed-by: Milan Broz <mbroz@redhat.com> Reviewed-by: Petr Rockai <prockai@redhat.com>
120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
/*
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* Copyright (C) 2008,2009 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "lib.h"
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#include "toolcontext.h"
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#include "locking.h"
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#include "lvm-version.h"
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#include "metadata-exported.h"
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#include "lvm2app.h"
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const char *lvm_library_get_version(void)
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{
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return LVM_VERSION;
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}
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lvm_t lvm_init(const char *system_dir)
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{
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struct cmd_context *cmd;
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/* FIXME: logging bound to handle
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*/
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/* create context */
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/* FIXME: split create_toolcontext */
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/* FIXME: make all globals configurable */
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cmd = create_toolcontext(0, system_dir, 1);
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if (!cmd)
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return NULL;
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if (stored_errno())
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return (lvm_t) cmd;
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/*
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* FIXME: if an non memory error occured, return the cmd (maybe some
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* cleanup needed).
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*/
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/* initialization from lvm_run_command */
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init_error_message_produced(0);
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/* FIXME: locking_type config option needed? */
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/* initialize locking */
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if (!init_locking(-1, cmd, 0)) {
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/* FIXME: use EAGAIN as error code here */
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lvm_quit((lvm_t) cmd);
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return NULL;
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}
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/*
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* FIXME: Use cmd->cmd_line as audit trail for liblvm calls. Used in
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* archive() call. Possible example:
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* cmd_line = "lvm_vg_create: vg1\nlvm_vg_extend vg1 /dev/sda1\n"
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*/
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cmd->cmd_line = "liblvm";
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return (lvm_t) cmd;
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}
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void lvm_quit(lvm_t libh)
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{
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destroy_toolcontext((struct cmd_context *)libh);
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}
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int lvm_config_reload(lvm_t libh)
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{
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/* FIXME: re-init locking needed here? */
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if (!refresh_toolcontext((struct cmd_context *)libh))
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return -1;
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return 0;
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}
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/*
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* FIXME: submit a patch to document the --config option
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*/
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int lvm_config_override(lvm_t libh, const char *config_settings)
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{
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struct cmd_context *cmd = (struct cmd_context *)libh;
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if (override_config_tree_from_string(cmd, config_settings))
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return -1;
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return 0;
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}
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int lvm_errno(lvm_t libh)
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{
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return stored_errno();
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}
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const char *lvm_errmsg(lvm_t libh)
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{
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return stored_errmsg();
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}
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const char *lvm_vgname_from_pvid(lvm_t libh, const char *pvid)
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{
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struct cmd_context *cmd = (struct cmd_context *)libh;
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struct id id;
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if (!id_read_format(&id, pvid)) {
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log_error(INTERNAL_ERROR "Unable to convert uuid");
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return NULL;
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}
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return find_vgname_from_pvid(cmd, (char *)id.uuid);
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}
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const char *lvm_vgname_from_device(lvm_t libh, const char *device)
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{
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struct cmd_context *cmd = (struct cmd_context *)libh;
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return find_vgname_from_pvname(cmd, device);
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}
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