diff options
author | dyson <dyson@FreeBSD.org> | 1997-04-13 01:48:35 +0000 |
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committer | dyson <dyson@FreeBSD.org> | 1997-04-13 01:48:35 +0000 |
commit | 61955ab83033e59cfabb8590ba5ccbf0669d9a47 (patch) | |
tree | 8d2081b02ed11701596e498b2013cf9f5a5625dd /sys/kern/imgact_gzip.c | |
parent | 438bdd8a9c9d390f13a4b05980c19b18e974d16c (diff) | |
download | FreeBSD-src-61955ab83033e59cfabb8590ba5ccbf0669d9a47.zip FreeBSD-src-61955ab83033e59cfabb8590ba5ccbf0669d9a47.tar.gz |
Fully implement vfork. Vfork is now much much faster than even our
fork. (On my machine, fork is about 240usecs, vfork is 78usecs.)
Implement rfork(!RFPROC !RFMEM), which allows a thread to divorce its memory
from the other threads of a group.
Implement rfork(!RFPROC RFCFDG), which closes all file descriptors, eliminating
possible existing shares with other threads/processes.
Implement rfork(!RFPROC RFFDG), which divorces the file descriptors for a
thread from the rest of the group.
Fix the case where a thread does an exec. It is almost nonsense for a thread
to modify the other threads address space by an exec, so we
now automatically divorce the address space before modifying it.
Diffstat (limited to 'sys/kern/imgact_gzip.c')
-rw-r--r-- | sys/kern/imgact_gzip.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/kern/imgact_gzip.c b/sys/kern/imgact_gzip.c index 9a3237f..e92db9b 100644 --- a/sys/kern/imgact_gzip.c +++ b/sys/kern/imgact_gzip.c @@ -6,7 +6,7 @@ * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp * ---------------------------------------------------------------------------- * - * $Id$ + * $Id: imgact_gzip.c,v 1.28 1997/02/22 09:38:57 peter Exp $ * * This module handles execution of a.out files which have been run through * "gzip". This saves diskspace, but wastes cpu-cycles and VM. @@ -149,7 +149,7 @@ static int do_aout_hdr(struct imgact_gzip * gz) { int error; - struct vmspace *vmspace = gz->ip->proc->p_vmspace; + struct vmspace *vmspace; vm_offset_t vmaddr; /* @@ -227,6 +227,8 @@ do_aout_hdr(struct imgact_gzip * gz) */ exec_new_vmspace(gz->ip); + vmspace = gz->ip->proc->p_vmspace; + vmaddr = gz->virtual_offset; error = vm_mmap(&vmspace->vm_map, |