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display: add display_lvname

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Add simple function to print vg/lv name.
Useful i.e. in error messages.
This commit is contained in:
Zdenek Kabelac 2014-07-02 00:01:46 +02:00
parent 6f6900d457
commit e21d0eb90e
2 changed files with 11 additions and 0 deletions
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9
lib/display/display.c
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@ -93,6 +93,15 @@ const char *get_percent_string(percent_type_t def)
return _percent_types[def]; return _percent_types[def];
} }
const char *display_lvname(const struct logical_volume *lv)
{
char buf[NAME_LEN * 2 + 2];
(void) snprintf(buf, sizeof(buf), "%s/%s", lv->vg->name, lv->name);
return dm_pool_strdup(lv->vg->cmd->mem, buf) ? : lv->name; /* at least LV name... */
}
#define BASE_UNKNOWN 0 #define BASE_UNKNOWN 0
#define BASE_SHARED 1 #define BASE_SHARED 1
#define BASE_1024 8 #define BASE_1024 8

2
lib/display/display.h
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@ -22,6 +22,8 @@
#include <stdint.h> #include <stdint.h>
const char *display_lvname(const struct logical_volume *lv);
/* Specify size in KB */ /* Specify size in KB */
const char *display_size(const struct cmd_context *cmd, uint64_t size); const char *display_size(const struct cmd_context *cmd, uint64_t size);
const char *display_size_long(const struct cmd_context *cmd, uint64_t size); const char *display_size_long(const struct cmd_context *cmd, uint64_t size);