mirror of
https://git.FreeBSD.org/src.git
synced 2025-01-17 15:27:36 +00:00
91d5354a2c
- struct plimit includes a mutex to protect a reference count. The plimit structure is treated similarly to struct ucred in that is is always copy on write, so having a reference to a structure is sufficient to read from it without needing a further lock. - The proc lock protects the p_limit pointer and must be held while reading limits from a process to keep the limit structure from changing out from under you while reading from it. - Various global limits that are ints are not protected by a lock since int writes are atomic on all the archs we support and thus a lock wouldn't buy us anything. - All accesses to individual resource limits from a process are abstracted behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return either an rlimit, or the current or max individual limit of the specified resource from a process. - dosetrlimit() was renamed to kern_setrlimit() to match existing style of other similar syscall helper functions. - The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit() (it didn't used the stackgap when it should have) but uses lim_rlimit() and kern_setrlimit() instead. - The svr4 compat no longer uses the stackgap for resource limits calls, but uses lim_rlimit() and kern_setrlimit() instead. - The ibcs2 compat no longer uses the stackgap for resource limits. It also no longer uses the stackgap for accessing sysctl's for the ibcs2_sysconf() syscall but uses kernel_sysctl() instead. As a result, ibcs2_sysconf() no longer needs Giant. - The p_rlimit macro no longer exists. Submitted by: mtm (mostly, I only did a few cleanups and catchups) Tested on: i386 Compiled on: alpha, amd64 |
||
|---|---|---|
| .. | ||
| alpha | ||
| amd64 | ||
| arm | ||
| boot | ||
| cam | ||
| coda | ||
| compat | ||
| conf | ||
| contrib | ||
| crypto | ||
| ddb | ||
| dev | ||
| fs | ||
| geom | ||
| gnu | ||
| i4b | ||
| i386 | ||
| ia64 | ||
| isa | ||
| isofs/cd9660 | ||
| kern | ||
| libkern | ||
| modules | ||
| net | ||
| net80211 | ||
| netatalk | ||
| netatm | ||
| netgraph | ||
| netinet | ||
| netinet6 | ||
| netipsec | ||
| netipx | ||
| netkey | ||
| netnatm | ||
| netncp | ||
| netsmb | ||
| nfs | ||
| nfs4client | ||
| nfsclient | ||
| nfsserver | ||
| opencrypto | ||
| pc98 | ||
| pccard | ||
| pci | ||
| posix4 | ||
| powerpc | ||
| rpc | ||
| security | ||
| sparc64 | ||
| sys | ||
| tools | ||
| ufs | ||
| vm | ||
| Makefile | ||