I am trying to run the following one line echo bash script using NSUserUnixTask:
echo "hello" >/dev/stderr
The Script file is named TaskLauncher and I have dropped it into my apps code
signed id folder in NSApplicationScriptsDirectory.
The task fails to launch and com.apple.foundation.UserScriptService crashes
leaving a report in the console.
I am doing something simple wrong, either that or my expectations are wrong.
There is no sample code for this class.
The error says "Invalid argument" but I don't see what the issue is.
My code is :
// get scripts folder
NSURL *scriptsFolderURL = [[NSFileManager defaultManager]
URLForDirectory:NSApplicationScriptsDirectory
inDomain:NSUserDomainMask
appropriateForURL:nil
create:NO
error:error];
if (*error) {
MLogInfo(@"Error: %@", *error);
errMsg = NSLocalizedString(@"Cannot access applications scripts
directory: ", @"Return by server when cannot access application scripts folder
in sandboxed app.");
[NSException raise:MGSTaskStartException format:@"%@ %@",
errMsg, *error];
}
MLogInfo(@"NSApplicationScriptsDirectory = %@", scriptsFolderURL);
// form task runner path.
NSString *taskRunnerExec = @"TaskLauncher";
NSURL *taskRunnerURL = [NSURL fileURLWithPathComponents:
@[[scriptsFolderURL path], taskRunnerExec]];
MLogInfo(@"taskRunnerURL = %@", taskRunnerURL);
// initialise the task
_unixTask = [[NSUserUnixTask alloc] initWithURL:taskRunnerURL
error:error];
if (*error) {
errMsg = NSLocalizedString(@"Cannot create unix task launcher:
", @"Return by server when cannot access application scripts task launcher in
sandboxed app.");
[NSException raise:MGSTaskStartException format:@"%@ %@",
errMsg, *error];
}
void (^completionHandler)(NSError *err);
completionHandler = ^(NSError *err) {
if (err) {
NSLog(@"TaskLauncher failed: %@", err);
} else {
NSLog(@"TaskLauncher okay");
}
};
NSArray *taskArguments = @[@"hello", @"task"];
// execute the task.
[_unixTask executeWithArguments:taskArguments
completionHandler:completionHandler];
Console Log:
01/12/2012 21:50:33.966 com.apple.foundation.UserScriptService[5931]: ***
NSTask: Task create for path '/Users/Jonathan/Library/Application
Scripts/com.mysoft.myapp/TaskLauncher' failed: 22, "Invalid argument".
Terminating temporary process.
Crash report extract:
Process: com.apple.foundation.UserScriptService [5931]
Path:
/System/Library/Frameworks/Foundation.framework/Versions/C/XPCServices/com.apple.foundation.UserScriptService.xpc/Contents/MacOS/com.apple.foundation.UserScriptService
Identifier: com.apple.foundation.UserScriptService
Version: 6.8 (945.11)
Code Type: X86-64 (Native)
Parent Process: com.apple.foundation.UserScriptService [5930]
User ID: 502
Date/Time: 2012-12-01 21:50:33.979 +0000
OS Version: Mac OS X 10.8.2 (12C54)
Report Version: 10
Crashed Thread: 0 Dispatch queue: com.apple.NSXPCConnection.peer-user.(null)
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Application Specific Information:
*** NSTask: Task create for path '/Users/Jonathan/Library/Application
Scripts/com.mysoft.myapp/TaskLauncher' failed: 22, "Invalid argument".
Terminating temporary process.
Thread 0 Crashed:: Dispatch queue: com.apple.NSXPCConnection.peer-user.(null)
0 com.apple.Foundation 0x00007fff93ca1258
___NEW_PROCESS_COULD_NOT_BE_EXECD___ + 5
1 com.apple.Foundation 0x00007fff93b7a911 -[NSConcreteTask
launchWithDictionary:] + 3544
2 com.apple.Foundation 0x00007fff93d60f59
-[NSUserScriptTaskRunner
executeScript:interpreter:arguments:standardInput:standardOutput:standardError::]
+ 794
3 com.apple.CoreFoundation 0x00007fff8912163c __invoking___ + 140
4 com.apple.CoreFoundation 0x00007fff891214d7 -[NSInvocation
invoke] + 263
5 com.apple.Foundation 0x00007fff93d49751 -[NSXPCConnection
_decodeAndInvokeMessageWithData:] + 1263
6 com.apple.Foundation 0x00007fff93d4b7da
__message_handler_block_invoke_0445 + 39
7 libdispatch.dylib 0x00007fff8aac3f01
_dispatch_call_block_and_release + 15
8 libdispatch.dylib 0x00007fff8aac00b6
_dispatch_client_callout + 8
9 libdispatch.dylib 0x00007fff8aac147f
_dispatch_queue_drain + 235
10 libdispatch.dylib 0x00007fff8aac12f1
_dispatch_queue_invoke + 52
11 libdispatch.dylib 0x00007fff8aac11c3
_dispatch_worker_thread2 + 249
12 libsystem_c.dylib 0x00007fff8b812cab _pthread_wqthread +
404
13 libsystem_c.dylib 0x00007fff8b7fd171 start_wqthread + 13
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x9aad7c2671738043 rbx: 0x00007fc538425520 rcx: 0x00007fc5390011f8
rdx: 0x00000000a1a1a1a1
rdi: 0x00007fc5390011f8 rsi: 0x00007fc539001000 rbp: 0x000000010dde75d0
rsp: 0x000000010dde75d0
r8: 0x00007fc538427cf0 r9: 0x00000000d3eb2432 r10: 0x0000000000000000
r11: 0x00000000d3eb2432
r12: 0x0000000000000000 r13: 0x00007fc539804d40 r14: 0x00007fff7a6fcaf0
r15: 0x00007fff93462240
rip: 0x00007fff93ca1258 rfl: 0x0000000000000202 cr2: 0x000000010db01000
Binary Images:
0x10db48000 - 0x10db48fff com.apple.foundation.UserScriptService
(6.8 - 945.11) <27791669-FEED-3082-80F6-5C5793EFFF50>
/System/Library/Frameworks/Foundation.framework/Versions/C/XPCServices/com.apple.foundation.UserScriptService.xpc/Contents/MacOS/com.apple.foundation.UserScriptService
0x7fff6d748000 - 0x7fff6d77c93f dyld (210.2.3)
<A40597AA-5529-3337-8C09-D8A014EB1578> /usr/lib/dyld
0x7fff88e6d000 - 0x7fff89008fef com.apple.vImage (6.0 - 6.0)
<FAE13169-295A-33A5-8E6B-7C2CC1407FA7>
/System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage
0x7fff89064000 - 0x7fff8909afff com.apple.DebugSymbols (98 - 98)
<14E788B1-4EB2-3FD7-934B-849534DFC198>
/System/Library/PrivateFrameworks/DebugSymbols.framework/Versions/A/DebugSymbols
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