src-test2/sys/compat/linux/linux_misc.c, branch release/5.3.0_cvs

This commit was manufactured by cvs2svn to create tag

2004-11-04T19:12:42Z

'RELENG_5_3_0_RELEASE'. This commit was manufactured to restore the state of the 5.3-RELEASE image.

Fix the 'DEBUG' argument code to unbreak the amd64 LINT build.

2004-08-16T11:12:57Z

Fix the 'DEBUG' argument code to unbreak the LINT build.

2004-08-16T10:36:12Z

Changes to MI Linux emulation code necessary to run 32-bit Linux binaries

2004-08-16T07:28:16Z

on AMD64, and the general case where the emulated platform has different size pointers than we use natively: - declare certain structure members as l_uintptr_t and use the new PTRIN and PTROUT macros to convert to and from native pointers. - declare some structures __packed on amd64 when the layout would differ from that used on i386. - include instead of if compiling with COMPAT_LINUX32. This will need to be revisited before 32-bit and 64-bit Linux emulation support can coexist in the same kernel. - other small scattered changes. This should be a no-op on i386 and Alpha.

Replace linux_getitimer() and linux_setitimer() with implementations

2004-08-15T12:34:15Z

based on those in freebsd32_misc.c, removing the assumption that Linux uses the same layout for struct itimerval as we use natively.

Avoid assuming that l_timeval is the same as the native struct timeval

2004-08-15T12:24:05Z

in linux_select().

Rename suser_cred()'s PRISON_ROOT flag to SUSER_ALLOWJAIL. This is

2004-07-26T07:24:04Z

somewhat clearer, but more importantly allows for a consistent naming scheme for suser_cred flags. The old name is still defined, but will be removed in a few days (unless I hear any complaints...) Discussed with: rwatson, scottl Requested by: jhb

Deorbit COMPAT_SUNOS.

2004-06-11T11:16:26Z

We inherited this from the sparc32 port of BSD4.4-Lite1. We have neither a sparc32 port nor a SunOS4.x compatibility desire these days.

- Replace wait1() with a kern_wait() function that accepts the pid,

2004-03-17T20:00:00Z

options, status pointer and rusage pointer as arguments. It is up to the caller to copyout the status and rusage to userland if needed. This lets us axe the 'compat' argument and hide all that functionality in owait(), by the way. This also cleans up some locking in kern_wait() since it no longer has to drop locks around copyout() since all the copyout()'s are deferred. - Convert owait(), wait4(), and the various ABI compat wait() syscalls to use kern_wait() rather than wait1() or wait4(). This removes a bit more stackgap usage. Tested on: i386 Compiled on: i386, alpha, amd64

Locking for the per-process resource limits structure.

2004-02-04T21:52:57Z

- 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