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I'm working on a cmdln tool which will (silently) mount an smb share (read-only, nobrowse), download file(s), unmount and cleanup. This fails when run as root. I would like to run it as root; the code needs to be able to run when no user is logged in. The log shows: Downloader: (loginsupport) [com.apple.NetAuthAgent:IPC] GetNetAuthAuthAgentPort: Calling bootstraplookup3() for com.apple.netauth.user.auth; uid = 0, euid = 0 Downloader: (loginsupport) [com.apple.NetAuthAgent:IPC] GetNetAuthAuthAgentPort: gNetAuthAuthAgentPort = 6403 Downloader: [com.acme.downloader:default] Failed to mount Optional(smb://pch-cores.local/cayman) because: 13 The same process, when run as some user (admin or not) works. The log shows: Downloader: (loginsupport) [com.apple.NetAuthAgent:IPC] GetNetAuthAuthAgentPort: Calling bootstraplookup3() for com.apple.netauth.user.auth; uid = 501, euid = 501 Downloader: (loginsupport) [com.apple.NetAuthAgent:IPC] GetNetAuthAuthAgentPort: gNetAuthAuthAgentPort = 6147 Downloader: [com.acme.downloader:default] Beginning file download for 10 files I also have a version of the tool which shells out to /sbin/mount. This works in either context. I would prefer to stick with the higher level API - just because. Is this a Keychain issue, or something else? Is there a fix/workaround for this?

When testing some code which parses an Iso8601 duration string and generates a TimeInterval, I came across some interesting behavior, which I take to be bug, but I may have missed some setup which would set things right. The short of it... Given the Iso8601 duration string, e.g., "P10675199DT2H48M5.4775" which has been parsed into DateComponents, use Calendar.current.date(byAdding:to:) to get a future date. When futureDate.timeIntervalSince(currentDate) is calculated, the interval returned MAY be different from the result of a manual calculation - off by one hour, or incorrect fractional seconds. The inital test was run using a number-of-days value for ~30k yrs. However, using other, smaller values can produce errors as well. Copy/Paste the following code into a playground to check me. Anyone know what might be happenging?import Cocoa var str = "Hello, playground" // Given the Iso8601 duration string "P10675199DT2H48M5.4775" (Yeah, made up for testing. Who really cares about a duration of ~30k yrs. Yikes!) let nanoSecs = Int(0.4775 * Double(NSEC_PER_SEC)) let components = DateComponents(calendar: nil, timeZone: nil, era: nil, year: nil, month: nil, day: 10675199, hour: 2, minute: 48, second: 5, nanosecond: nanoSecs, weekday: nil, weekdayOrdinal: nil, quarter: nil, weekOfMonth: nil, weekOfYear: nil, yearForWeekOfYear: nil) //let components = DateComponents(calendar: nil, timeZone: nil, era: nil, year: nil, month: nil, day: 20*365, hour: 2, minute: 48, second: 5, nanosecond: nanoSecs, weekday: nil, weekdayOrdinal: nil, quarter: nil, weekOfMonth: nil, weekOfYear: nil, yearForWeekOfYear: nil) let currentDate = Date() var calendarDuration: TimeInterval = 0 if let futureDate = Calendar.current.date(byAdding: components, to: currentDate) { let futureDateComponents = Calendar.current.dateComponents([Calendar.Component.day, Calendar.Component.month, Calendar.Component.year], from: futureDate) print(futureDateComponents) calendarDuration = futureDate.timeIntervalSince(currentDate) } // Compare against a manual calculation let secondsPerDay: TimeInterval = 86400 let secondsPerHour: TimeInterval = 3600 let secondsPerMinute: TimeInterval = 60 let calcDuration = (10675199 * secondsPerDay) + (2 * secondsPerHour) + (48 * secondsPerMinute) + 5.4775 //let calcDuration = ( 20*365 * secondsPerDay) + (2 * secondsPerHour) + (48 * secondsPerMinute) + 5.4775 print(calendarDuration) // 922337207285.4775 print(calcDuration) // 922337203685.4775 print(calendarDuration - calcDuration) // = 3600.0 Off by 1 hour!! // Interestingly, for some values of the number of days (e.g., 20*365, but not 30*365) the fractinal seconds value starts to go heywire.