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hints: fix hint flock when using lvm shell

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also cmd->use_hints needs to be set for each shell command
This commit is contained in:
David Teigland 2019-01-15 12:23:16 -06:00
parent 3cf7668e34
commit 7b5abc3fb1
4 changed files with 17 additions and 5 deletions
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3
lib/commands/toolcontext.c
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@ -22,6 +22,7 @@
#include "lib/activate/activate.h"
#include "lib/filters/filter.h"
#include "lib/label/label.h"
#include "lib/label/hints.h"
#include "lib/misc/lvm-file.h"
#include "lib/format_text/format-text.h"
#include "lib/display/display.h"
@ -1781,6 +1782,7 @@ int refresh_toolcontext(struct cmd_context *cmd)
*/
activation_release();
hints_exit();
lvmcache_destroy(cmd, 0, 0);
label_scan_destroy(cmd);
label_exit();
@ -1900,6 +1902,7 @@ void destroy_toolcontext(struct cmd_context *cmd)
archive_exit(cmd);
backup_exit(cmd);
hints_exit();
lvmcache_destroy(cmd, 0, 0);
label_scan_destroy(cmd);
label_exit();

14
lib/label/hints.c
View File

@ -344,6 +344,13 @@ static void _unlock_hints(void)
_hints_fd = -1;
}
void hints_exit(void)
{
if (_hints_fd == -1)
return;
return _unlock_hints();
}
static struct hint *_find_hint_name(struct dm_list *hints, const char *name)
{
struct hint *hint;
@ -989,6 +996,8 @@ void clear_hint_file(struct cmd_context *cmd)
if (!cmd->enable_hints)
return;
log_debug("clear_hint_file");
/*
* This function runs even when cmd->use_hints is 0,
* which means this command does not use hints, but
@ -999,11 +1008,6 @@ void clear_hint_file(struct cmd_context *cmd)
if (!_touch_nohints())
stack;
/*
* We are relying on the command exit to release this flock,
* we should probably add an explicit unlock_hints call.
*/
if (!_lock_hints(LOCK_EX, 0))
stack;

2
lib/label/hints.h
View File

@ -33,5 +33,7 @@ int get_hints(struct cmd_context *cmd, struct dm_list *hints, int *newhints,
int validate_hints(struct cmd_context *cmd, struct dm_list *hints);
void hints_exit(void);
#endif

3
tools/lvmcmdline.c
View File

@ -2331,6 +2331,8 @@ static int _get_current_settings(struct cmd_context *cmd)
/* Only certain commands need to be optimized by using hints. */
if (cmd->cname->flags & ALLOW_HINTS)
cmd->use_hints = 1;
else
cmd->use_hints = 0;
if ((hint_mode = find_config_tree_str(cmd, devices_hints_CFG, NULL))) {
if (!strcmp(hint_mode, "none"))
@ -2986,6 +2988,7 @@ int lvm_run_command(struct cmd_context *cmd, int argc, char **argv)
out:
hints_exit();
lvmcache_destroy(cmd, 1, 1);
label_scan_destroy(cmd);