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Improve lock handling of /var/lib/humaxtv/setup.db

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This commit is contained in:
prpr 2022-09-10 15:31:33 +01:00
parent aab63aa8cc
commit 25bb62f622
1 changed files with 31 additions and 6 deletions
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37
webif/lib/system.class
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@ -569,16 +569,41 @@ proc {system restartpending} {{mode 1}} {
}
}
proc {system param} {param {type Value} {tbl MENUCONFIG}} {
proc {system param} {param {type Value} {tbl MENUCONFIG}} {{newdb ""}} {
if {[catch {set db [sqlite3.open /var/lib/humaxtv/setup.db]} msg]} {
return 0
}
catch {$db query {pragma busy_timeout(50)}}
set val 0
set ret [$db query "
select item$type
from TBL_$tbl
where itemName = '$param'
"]
loop _ 2 {
try {
set ret [$db query "
select item$type
from TBL_$tbl
where itemName = '$param'
"]
break
} on error {msg opts} {
if {[string first "database is locked" $msg] >= 0} {
try {
if {$newdb eq ""} {
set newdb [file tempfile /tmp/setupXXXXXX]
defer "catch {file delete $newdb}"
}
file copy -force /var/lib/humaxtv/setup.db $newdb
set db [sqlite3.open $newdb]
} on error {msg opts} {
file delete $newdb
break
}
continue
}
catch {$db close}
return {*}$opts $msg
}
}
if {[llength $ret] == 1} {
lassign [lindex $ret 0] x val
}