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locks: Parse lock kind earlier

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Currently we keep the lock type (posix/flock) till the
time we dump it, then "decode" it into binary value.
I will need the easy-to-check one early, so parse the
kind in proc_parse.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Pavel Emelyanov
2014-08-26 21:30:15 +04:00
parent 8ef0f6b7e6
commit 0095b40a29
3 changed files with 26 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
file-lock.c
View File

@@ -72,17 +72,10 @@ static int dump_one_file_lock(FileLockEntry *fle)
fle, PB_FILE_LOCK);
}
static int fill_flock_entry(FileLockEntry *fle, const char *fl_flag,
static int fill_flock_entry(FileLockEntry *fle, int fl_kind,
const char *fl_type, const char *fl_option)
{
if (!strcmp(fl_flag, "POSIX")) {
fle->flag |= FL_POSIX;
} else if (!strcmp(fl_flag, "FLOCK")) {
fle->flag |= FL_FLOCK;
} else {
pr_err("Unknown file lock!\n");
goto err;
}
fle->flag |= fl_kind;
if (!strcmp(fl_type, "MSNFS")) {
fle->type |= LOCK_MAND;
@@ -150,15 +143,15 @@ int dump_task_file_locks(struct parasite_ctl *ctl,
list_for_each_entry(fl, &file_lock_list, list) {
if (fl->fl_owner != pid)
continue;
pr_info("lockinfo: %lld:%s %s %s %d %02x:%02x:%ld %lld %s\n",
fl->fl_id, fl->fl_flag, fl->fl_type, fl->fl_option,
pr_info("lockinfo: %lld:%d %s %s %d %02x:%02x:%ld %lld %s\n",
fl->fl_id, fl->fl_kind, fl->fl_type, fl->fl_option,
fl->fl_owner, fl->maj, fl->min, fl->i_no,
fl->start, fl->end);
file_lock_entry__init(&fle);
fle.pid = ctl->pid.virt;
ret = fill_flock_entry(&fle, fl->fl_flag, fl->fl_type,
ret = fill_flock_entry(&fle, fl->fl_kind, fl->fl_type,
fl->fl_option);
if (ret)
goto err;

3
include/file-lock.h
View File

@@ -6,6 +6,7 @@
#include "protobuf.h"
#include "protobuf/file-lock.pb-c.h"
#define FL_UNKNOWN -1
#define FL_POSIX 1
#define FL_FLOCK 2
@@ -30,7 +31,7 @@
struct file_lock {
long long fl_id;
char fl_flag[10];
int fl_kind;
char fl_type[15];
char fl_option[10];

23
proc_parse.c
View File

@@ -1415,15 +1415,16 @@ static int parse_file_lock_buf(char *buf, struct file_lock *fl,
bool is_blocked)
{
int num;
char fl_flag[10];
if (is_blocked) {
num = sscanf(buf, "%lld: -> %s %s %s %d %x:%x:%ld %lld %s",
&fl->fl_id, fl->fl_flag, fl->fl_type, fl->fl_option,
&fl->fl_id, fl_flag, fl->fl_type, fl->fl_option,
&fl->fl_owner, &fl->maj, &fl->min, &fl->i_no,
&fl->start, fl->end);
} else {
num = sscanf(buf, "%lld:%s %s %s %d %x:%x:%ld %lld %s",
&fl->fl_id, fl->fl_flag, fl->fl_type, fl->fl_option,
&fl->fl_id, fl_flag, fl->fl_type, fl->fl_option,
&fl->fl_owner, &fl->maj, &fl->min, &fl->i_no,
&fl->start, fl->end);
}
@@ -1433,6 +1434,13 @@ static int parse_file_lock_buf(char *buf, struct file_lock *fl,
return -1;
}
if (!strcmp(fl_flag, "POSIX"))
fl->fl_kind = FL_POSIX;
else if (!strcmp(fl_flag, "FLOCK"))
fl->fl_kind = FL_FLOCK;
else
fl->fl_kind = FL_UNKNOWN;
return 0;
}
@@ -1476,6 +1484,13 @@ int parse_file_locks(void)
continue;
}
if (fl->fl_kind == FL_UNKNOWN) {
pr_err("Unknown file lock!\n");
ret = -1;
xfree(fl);
goto err;
}
if (is_blocked) {
/*
* Here the task is in the pstree.
@@ -1491,8 +1506,8 @@ int parse_file_locks(void)
goto err;
}
pr_info("lockinfo: %lld:%s %s %s %d %02x:%02x:%ld %lld %s\n",
fl->fl_id, fl->fl_flag, fl->fl_type, fl->fl_option,
pr_info("lockinfo: %lld:%d %s %s %d %02x:%02x:%ld %lld %s\n",
fl->fl_id, fl->fl_kind, fl->fl_type, fl->fl_option,
fl->fl_owner, fl->maj, fl->min, fl->i_no,
fl->start, fl->end);