minix

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Author	SHA1	Message	Date
Ben Gras	0b79eac642	mmap: accept non-PROT_WRITE MAP_SHARED mappings Currently we don't accept writable file mmap()s, as there is no system in place to guarantee dirty buffers would make it back to disk. But we can actually accept MAP_SHARED for PROT_READ mappings, meaning the ranges aren't writable at all (and no private copy is made as with MAP_PRIVATE), as it turns out a fairly large class of usage. . fail writable MAP_SHARED mappings at runtime . reduces some minix-specific patches . lets binutils gold build on minix without further patching Change-Id: If2896c0a555328ac5b324afa706063fc6d86519e	2014-07-28 17:05:20 +02:00
Ben Gras	dda632a24f	drop the minix_ prefixes for mmap and munmap also cleanup of various minix-specific changes, cleanup of mmap-related testing. Change-Id: I289a4fc50cf8a13df4a6082038d860853a4bd024	2014-03-03 20:47:03 +01:00
Thomas Cort	d44a5ed1c1	Importing usr.bin/msgc Minix-specific changes were needed in msg_sys.def: * use minix_mmap()/minix_munmap() since mmap()/munmap() aren't defined on Minix. * use MAP_PRIVATE flag since MAP_SHARED isn't defined on Minix. Tested with usr.bin/menuc/testm. Change-Id: I1c463e7b0623036050adb6a9079c6747e1c1e084	2013-11-06 11:46:22 -05:00

Author

SHA1

Message

Date

Ben Gras

0b79eac642

mmap: accept non-PROT_WRITE MAP_SHARED mappings

Currently we don't accept writable file mmap()s, as there is no
system in place to guarantee dirty buffers would make it back to
disk. But we can actually accept MAP_SHARED for PROT_READ mappings,
meaning the ranges aren't writable at all (and no private copy is
made as with MAP_PRIVATE), as it turns out a fairly large class of
usage.

	. fail writable MAP_SHARED mappings at runtime
	. reduces some minix-specific patches
	. lets binutils gold build on minix without further patching

Change-Id: If2896c0a555328ac5b324afa706063fc6d86519e

2014-07-28 17:05:20 +02:00

Ben Gras

dda632a24f

drop the minix_ prefixes for mmap and munmap

also cleanup of various minix-specific changes, cleanup of
mmap-related testing.

Change-Id: I289a4fc50cf8a13df4a6082038d860853a4bd024

2014-03-03 20:47:03 +01:00

Thomas Cort

d44a5ed1c1

Importing usr.bin/msgc

Minix-specific changes were needed in msg_sys.def:

 * use minix_mmap()/minix_munmap() since mmap()/munmap() aren't
   defined on Minix.

 * use MAP_PRIVATE flag since MAP_SHARED isn't defined on Minix.

Tested with usr.bin/menuc/testm.

Change-Id: I1c463e7b0623036050adb6a9079c6747e1c1e084

2013-11-06 11:46:22 -05:00

3 commits