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authorLinus Torvalds <torvalds@linux-foundation.org>2024-11-18 10:47:46 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2024-11-18 10:47:46 -0800
commit909d3b571e5a77aef0949818de1efda129dcddbd (patch)
treea6e34ed57a730fe06d9209e472f779743d1acc26 /arch/arm64/include
parenta29835c9d0ba5365d64b56883692d0e8675fb615 (diff)
parentcdda1f26e74bac732eca537a69f19f6a37b641be (diff)
Merge tag 'vfs-6.13.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull pidfs update from Christian Brauner: "This adds a new ioctl to retrieve information about a pidfd. A common pattern when using pidfds is having to get information about the process, which currently requires /proc being mounted, resolving the fd to a pid, and then do manual string parsing of /proc/N/status and friends. This needs to be reimplemented over and over in all userspace projects (e.g.: it has been reimplemented in systemd, dbus, dbus-daemon, polkit so far), and requires additional care in checking that the fd is still valid after having parsed the data, to avoid races. Having a programmatic API that can be used directly removes all these requirements, including having /proc mounted. As discussed at LPC24, add an ioctl with an extensible struct so that more parameters can be added later if needed. Start with returning pid/tgid/ppid and some creds unconditionally, and cgroupid optionally" * tag 'vfs-6.13.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: pidfd: add ioctl to retrieve pid info
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