Date: Mon, 7 Feb 2005 18:44:55 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/compat/linux linux_ipc.c src/sys/kern kern_descrip.c sysv_msg.c vfs_lookup.c vfs_syscalls.c src/sys/sys syscallsubr.h Message-ID: <200502071844.j17Iit8X032544@repoman.freebsd.org>
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jhb 2005-02-07 18:44:55 UTC
FreeBSD src repository
Modified files:
sys/compat/linux linux_ipc.c
sys/kern kern_descrip.c sysv_msg.c vfs_lookup.c
vfs_syscalls.c
sys/sys syscallsubr.h
Log:
- Tweak kern_msgctl() to return a copy of the requested message queue id
structure in the struct pointed to by the 3rd argument for IPC_STAT and
get rid of the 4th argument. The old way returned a pointer into the
kernel array that the calling function would then access afterwards
without holding the appropriate locks and doing non-lock-safe things like
copyout() with the data anyways. This change removes that unsafeness and
resulting race conditions as well as simplifying the interface.
- Implement kern_foo wrappers for stat(), lstat(), fstat(), statfs(),
fstatfs(), and fhstatfs(). Use these wrappers to cut out a lot of
code duplication for freebsd4 and netbsd compatability system calls.
- Add a new lookup function kern_alternate_path() that looks up a filename
under an alternate prefix and determines which filename should be used.
This is basically a more general version of linux_emul_convpath() that
can be shared by all the ABIs thus allowing for further reduction of
code duplication.
Revision Changes Path
1.42 +2 -3 src/sys/compat/linux/linux_ipc.c
1.274 +17 -19 src/sys/kern/kern_descrip.c
1.59 +5 -7 src/sys/kern/sysv_msg.c
1.70 +113 -0 src/sys/kern/vfs_lookup.c
1.371 +96 -122 src/sys/kern/vfs_syscalls.c
1.22 +17 -5 src/sys/sys/syscallsubr.h
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