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authorRoland McGrath <roland@gnu.org>1995-12-12 02:42:14 +0000
committerRoland McGrath <roland@gnu.org>1995-12-12 02:42:14 +0000
commit65bf5fa3172ab9d77fd1792fae68ad85eed2a7b1 (patch)
treec3816deedd850359142a0003295cf4f1b0ea96f3 /sysdeps/mach
parent9b8a44cd18fbf1aedeb03e19f4bcdb06b0ee409b (diff)
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Regenerated
Fri Dec 8 13:04:51 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * posix/glob.c: Implement new options GLOB_ALTDIRFUNC, GLOB_BRACE, GLOB_TILDE, GLOB_NOMAGIC. (glob): Use stat instead of lstat to determine directoriness. * posix/glob.h (GLOB_ALTDIRFUNC, GLOB_BRACE, GLOB_NOMAGIC, GLOB_TILDE): New flag bits. (__GLOB_FLAGS): Include them. (glob_t): New members gl_closedir, gl_readdir, gl_opendir, gl_lstat, gl_stat.
Diffstat (limited to 'sysdeps/mach')
-rw-r--r--sysdeps/mach/hurd/mmap.c34
1 files changed, 28 insertions, 6 deletions
diff --git a/sysdeps/mach/hurd/mmap.c b/sysdeps/mach/hurd/mmap.c
index 0ef847f7c2..f42c4e55c3 100644
--- a/sysdeps/mach/hurd/mmap.c
+++ b/sysdeps/mach/hurd/mmap.c
@@ -38,6 +38,22 @@ __mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t offset)
vm_prot_t vmprot;
memory_object_t memobj;
vm_address_t mapaddr;
+ vm_size_t pageoff;
+
+ pageoff = offset & (vm_page_size - 1);
+ offset &= ~(vm_page_size - 1);
+
+ mapaddr = (vm_address_t) addr;
+ if (flags & MAP_FIXED)
+ {
+ /* A specific address is requested. It need not be page-aligned;
+ it just needs to be congruent with the object offset. */
+ if ((mapaddr & (vm_page_size - 1)) != pageoff)
+ return (caddr_t) (long int) __hurd_fail (EINVAL);
+ else
+ /* We will add back PAGEOFF after mapping. */
+ mapaddr -= pageoff;
+ }
vmprot = VM_PROT_NONE;
if (prot & PROT_READ)
@@ -100,16 +116,16 @@ __mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t offset)
}
}
- mapaddr = (vm_address_t) addr;
+ /* XXX handle MAP_INHERIT */
+
err = __vm_map (__mach_task_self (),
&mapaddr, (vm_size_t) len, (vm_address_t) 0,
! (flags & MAP_FIXED),
memobj, (vm_offset_t) offset,
- flags & (MAP_COPY|MAP_PRIVATE),
+ ! (flags & MAP_SHARED),
vmprot, VM_PROT_ALL,
- (flags & MAP_INHERIT) == 0 ? VM_INHERIT_NONE :
- (flags & (MAP_COPY|MAP_PRIVATE)) ? VM_INHERIT_COPY :
- VM_INHERIT_SHARE);
+ (flags & MAP_SHARED) ? VM_INHERIT_SHARE : VM_INHERIT_COPY);
+
if (err == KERN_NO_SPACE && (flags & MAP_FIXED))
{
/* XXX this is not atomic as it is in unix! */
@@ -129,7 +145,13 @@ __mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t offset)
if (memobj != MACH_PORT_NULL)
__mach_port_deallocate (__mach_task_self (), memobj);
- return err ? (caddr_t) (long int) __hurd_fail (err) : (caddr_t) mapaddr;
+ if (err)
+ return (caddr_t) (long int) __hurd_fail (err);
+
+ /* Adjust the mapping address for the offset-within-page. */
+ mapaddr += pageoff;
+
+ return (caddr_t) mapaddr;
}
weak_alias (__mmap, mmap)