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Allow CloudABI processes to create shared memory objects.

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Summary:
Use the newly created `kern_shm_open()` function to create objects with
just the rights that are actually needed.

Reviewers: jhb, kib

Subscribers: imp

Differential Revision: https://reviews.freebsd.org/D3260
This commit is contained in:
Ed Schouten 2015-08-01 07:51:48 +00:00
parent 7ee1b208c3
commit f52c3dd415
1 changed files with 6 additions and 0 deletions
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6
sys/compat/cloudabi/cloudabi_fd.c
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@ -30,6 +30,7 @@ __FBSDID("$FreeBSD$");
#include <sys/capsicum.h>
#include <sys/filedesc.h>
#include <sys/proc.h>
#include <sys/mman.h>
#include <sys/socketvar.h>
#include <sys/syscallsubr.h>
#include <sys/sysproto.h>
@ -97,11 +98,16 @@ int
cloudabi_sys_fd_create1(struct thread *td,
struct cloudabi_sys_fd_create1_args *uap)
{
struct filecaps fcaps = {};
struct socket_args socket_args = {
.domain = AF_UNIX,
};
switch (uap->type) {
case CLOUDABI_FILETYPE_SHARED_MEMORY:
cap_rights_init(&fcaps.fc_rights, CAP_FSTAT, CAP_FTRUNCATE,
CAP_MMAP_RWX);
return (kern_shm_open(td, SHM_ANON, O_RDWR, 0, &fcaps));
case CLOUDABI_FILETYPE_SOCKET_DGRAM:
socket_args.type = SOCK_DGRAM;
return (sys_socket(td, &socket_args));