src-test/sys/fs/procfs, branch main

fs: clean up empty lines in .c and .h files

2020-09-01T21:18:40Z

cache: drop the always curthread argument from reverse lookup routines

2020-08-24T08:57:02Z

Note VOP_VPTOCNP keeps getting it as temporary compatibility for zfs. Tested by: pho

Retire procfs-based process debugging.

2020-04-01T19:22:09Z

Modern debuggers and process tracers use ptrace() rather than procfs for debugging. ptrace() has a supserset of functionality available via procfs and new debugging features are only added to ptrace(). While the two debugging services share some fields in struct proc, they each use dedicated fields and separate code. This results in extra complexity to support a feature that hasn't been enabled in the default install for several years. PR: 244939 (exp-run) Reviewed by: kib, mjg (earlier version) Relnotes: yes Differential Revision: https://reviews.freebsd.org/D23837

Mark procfs-based process debugging as deprecated for FreeBSD 13.

2020-03-17T18:44:03Z

Attempting to use ioctls on /proc//mem to control a process will trigger warnings on the console. The include file will also now emit a compile-time warning when used from userland. Reviewed by: emaste MFC after: 1 week Relnotes: yes Differential Revision: https://reviews.freebsd.org/D23822

Define macro VM_MAP_ENTRY_FOREACH for enumerating the entries in a vm_map.

2019-10-08T07:14:21Z

In case the implementation ever changes from using a chain of next pointers, then changing the macro definition will be necessary, but changing all the files that iterate over vm_map entries will not. Drop a counter in vm_object.c that would have an effect only if the vm_map entry count was wrong. Discussed with: alc Reviewed by: markj Tested by: pho (earlier version) Differential Revision: https://reviews.freebsd.org/D21882

Plug memory disclosures via ptrace(2).

2018-12-03T20:54:17Z

On some architectures, the structures returned by PT_GET*REGS were not fully populated and could contain uninitialized stack memory. The same issue existed with the register files in procfs. Reported by: Thomas Barabosch, Fraunhofer FKIE Reviewed by: kib MFC after: 3 days Security: kernel stack memory disclosure Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D18421

Make it easier for filesystems to count themselves as jail-enabled,

2018-05-04T20:54:27Z

by doing most of the work in a new function prison_add_vfs in kern_jail.c Now a jail-enabled filesystem need only mark itself with VFCF_JAIL, and the rest is taken care of. This includes adding a jail parameter like allow.mount.foofs, and a sysctl like security.jail.mount_foofs_allowed. Both of these used to be a static list of known filesystems, with predefined permission bits. Reviewed by: kib Differential Revision: D14681

[procfs] Split procfs_attr into multiple functions

2018-04-24T14:49:09Z

Reviewed by: des, kib Discussed with: mmacy Differential Revision: https://reviews.freebsd.org/D15150

Move most of the contents of opt_compat.h to opt_global.h.

2018-04-06T17:35:35Z

opt_compat.h is mentioned in nearly 180 files. In-progress network driver compabibility improvements may add over 100 more so this is closer to "just about everywhere" than "only some files" per the guidance in sys/conf/options. Keep COMPAT_LINUX32 in opt_compat.h as it is confined to a subset of sys/compat/linux/*.c. A fake _COMPAT_LINUX option ensure opt_compat.h is created on all architectures. Move COMPAT_LINUXKPI to opt_dontuse.h as it is only used to control the set of compiled files. Reviewed by: kib, cem, jhb, jtl Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D14941

Correct comment. procfs_doprocfile implements 'file', not 'self'.

2018-01-05T18:32:46Z