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VBOX: If recent copies of VirtualBox log files are missing, use the last cached copy of the log file we successfully retrieved for dumping out log data on premature shutdowns.

This commit is contained in:
Rom Walton 2014-07-02 19:44:05 -04:00
parent 5960c9eeb3
commit f230391349
1 changed files with 28 additions and 0 deletions
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28
samples/vboxwrapper/vbox.cpp
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@ -2067,6 +2067,7 @@ int VBOX_VM::get_system_log(string& log, bool tail_only) {
string virtualbox_system_log_dst;
string::iterator iter;
int retval = BOINC_SUCCESS;
char buf[256];
// Where should we copy temp files to?
get_slot_directory(slot_directory);
@ -2079,7 +2080,15 @@ int VBOX_VM::get_system_log(string& log, bool tail_only) {
// Skip having to deal with various forms of file locks by just making a temp
// copy of the log file.
boinc_copy(virtualbox_system_log_src.c_str(), virtualbox_system_log_dst.c_str());
} else {
fprintf(
stderr,
"%s ERROR: Stale VirtualBox System Log used.\n",
vboxwrapper_msg_prefix(buf, sizeof(buf))
);
}
if (boinc_file_exists(virtualbox_system_log_dst.c_str())) {
if (tail_only) {
// Keep only the last 8k if it is larger than that.
read_file_string(virtualbox_system_log_dst.c_str(), log, 8192, true);
@ -2103,6 +2112,11 @@ int VBOX_VM::get_system_log(string& log, bool tail_only) {
}
}
} else {
fprintf(
stderr,
"%s ERROR: Stale VirtualBox System Log Not Found.\n",
vboxwrapper_msg_prefix(buf, sizeof(buf))
);
retval = ERR_NOT_FOUND;
}
@ -2115,6 +2129,7 @@ int VBOX_VM::get_vm_log(string& log, bool tail_only) {
string virtualbox_vm_log_dst;
string::iterator iter;
int retval = BOINC_SUCCESS;
char buf[256];
// Where should we copy temp files to?
get_slot_directory(slot_directory);
@ -2127,7 +2142,15 @@ int VBOX_VM::get_vm_log(string& log, bool tail_only) {
// Skip having to deal with various forms of file locks by just making a temp
// copy of the log file.
boinc_copy(virtualbox_vm_log_src.c_str(), virtualbox_vm_log_dst.c_str());
} else {
fprintf(
stderr,
"%s ERROR: Stale VirtualBox VM Log used.\n",
vboxwrapper_msg_prefix(buf, sizeof(buf))
);
}
if (boinc_file_exists(virtualbox_vm_log_dst.c_str())) {
if (tail_only) {
// Keep only the last 8k if it is larger than that.
read_file_string(virtualbox_vm_log_dst.c_str(), log, 8192, true);
@ -2152,6 +2175,11 @@ int VBOX_VM::get_vm_log(string& log, bool tail_only) {
}
} else {
fprintf(
stderr,
"%s ERROR: Stale VirtualBox VM Log Not Found.\n",
vboxwrapper_msg_prefix(buf, sizeof(buf))
);
retval = ERR_NOT_FOUND;
}