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authorUlrich Drepper <drepper@redhat.com>1998-07-16 20:14:19 +0000
committerUlrich Drepper <drepper@redhat.com>1998-07-16 20:14:19 +0000
commiteb0e1178c54f29cc51c5a035ea035f634d348fd1 (patch)
tree121c6eaafeb9eb0819ae003d31a5c3bc376bcedb /sysdeps/mach
parent107f81314155383ab9c0625f3d157be55131f837 (diff)
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Update.
1998-07-16 Mark Kettenis <kettenis@phys.uva.nl> * sysdeps/mach/hurd/dl-sysdep.c (open_file): Return a Hurd I/O port instead of a Mach memory object. (__open): Likewise. (__libc_read): New function. (__mmap): Change to take a Hurd I/O port instead of a Mach memory object.
Diffstat (limited to 'sysdeps/mach')
-rw-r--r--sysdeps/mach/hurd/dl-sysdep.c74
1 files changed, 54 insertions, 20 deletions
diff --git a/sysdeps/mach/hurd/dl-sysdep.c b/sysdeps/mach/hurd/dl-sysdep.c
index 71ccdfb500..ba8a12b195 100644
--- a/sysdeps/mach/hurd/dl-sysdep.c
+++ b/sysdeps/mach/hurd/dl-sysdep.c
@@ -225,11 +225,11 @@ _dl_sysdep_start_cleanup (void)
dynamic linker re-relocates itself to be user-visible (for -ldl),
it will get the user's definition (i.e. usually libc's). */
-/* Open FILE_NAME and return a read-mmappable port in MEMOBJ_RD for it, or
+/* Open FILE_NAME and return a Hurd I/O for it in *PORT, or
return an error. If STAT is non-zero, stat the file into that stat buffer. */
static error_t
open_file (const char *file_name, int mode,
- mach_port_t *memobj_rd, struct stat *stat)
+ mach_port_t *port, struct stat *stat)
{
enum retry_type doretry;
char retryname[1024]; /* XXX string_t LOSES! */
@@ -288,27 +288,26 @@ open_file (const char *file_name, int mode,
/* An empty RETRYNAME indicates we have the final port. */
if (retryname[0] == '\0')
{
- mach_port_t memobj_wr;
-
dealloc_dir = 1;
-
opened:
/* We have the file open. Now map it. */
-
if (stat)
err = __io_stat (fileport, stat);
- if (! err)
- err = __io_map (fileport, memobj_rd, &memobj_wr);
- if (dealloc_dir)
- __mach_port_deallocate (__mach_task_self (), fileport);
if (err)
- return err;
-
- if (memobj_wr != MACH_PORT_NULL)
- __mach_port_deallocate (__mach_task_self (), memobj_wr);
+ {
+ if (dealloc_dir)
+ __mach_port_deallocate (__mach_task_self (), fileport);
+ }
+ else
+ {
+ if (!dealloc_dir)
+ __mach_port_mod_refs (__mach_task_self (), fileport,
+ MACH_PORT_RIGHT_SEND, 1);
+ *port = fileport;
+ }
- return 0;
+ return err;
}
startdir = fileport;
@@ -462,12 +461,12 @@ open_file (const char *file_name, int mode,
int weak_function
__open (const char *file_name, int mode, ...)
{
- mach_port_t memobj_rd;
- error_t err = open_file (file_name, mode, &memobj_rd, 0);
+ mach_port_t port;
+ error_t err = open_file (file_name, mode, &port, 0);
if (err)
return __hurd_fail (err);
else
- return (int)memobj_rd;
+ return (int)port;
}
int weak_function
@@ -478,12 +477,34 @@ __close (int fd)
return 0;
}
+__ssize_t weak_function
+__libc_read (int fd, void *buf, size_t nbytes)
+{
+ error_t err;
+ char *data;
+ mach_msg_type_number_t nread;
+
+ data = buf;
+ err = __io_read ((mach_port_t) fd, &data, &nread, -1, nbytes);
+ if (err)
+ return __hurd_fail (err);
+
+ if (data != buf)
+ {
+ memcpy (buf, data, nread);
+ __vm_deallocate (__mach_task_self (), (vm_address_t) data, nread);
+ }
+
+ return nread;
+}
+
__ptr_t weak_function
__mmap (__ptr_t addr, size_t len, int prot, int flags, int fd, off_t offset)
{
error_t err;
vm_prot_t vmprot;
vm_address_t mapaddr;
+ mach_port_t memobj_rd, memobj_wr;
vmprot = VM_PROT_NONE;
if (prot & PROT_READ)
@@ -493,11 +514,21 @@ __mmap (__ptr_t addr, size_t len, int prot, int flags, int fd, off_t offset)
if (prot & PROT_EXEC)
vmprot |= VM_PROT_EXECUTE;
+ if (flags & MAP_ANON)
+ memobj_rd = MACH_PORT_NULL;
+ else
+ {
+ err = __io_map ((mach_port_t) fd, &memobj_rd, &memobj_wr);
+ if (err)
+ return (__ptr_t) __hurd_fail (err);
+ __mach_port_deallocate (__mach_task_self (), memobj_wr);
+ }
+
mapaddr = (vm_address_t) addr;
err = __vm_map (__mach_task_self (),
&mapaddr, (vm_size_t) len, 0 /*ELF_MACHINE_USER_ADDRESS_MASK*/,
!(flags & MAP_FIXED),
- (flags & MAP_ANON) ? MACH_PORT_NULL : (mach_port_t) fd,
+ memobj_rd,
(vm_offset_t) offset,
flags & (MAP_COPY|MAP_PRIVATE),
vmprot, VM_PROT_ALL,
@@ -511,13 +542,16 @@ __mmap (__ptr_t addr, size_t len, int prot, int flags, int fd, off_t offset)
err = __vm_map (__mach_task_self (),
&mapaddr, (vm_size_t) len, 0 /*ELF_MACHINE_USER_ADDRESS_MASK*/,
!(flags & MAP_FIXED),
- (mach_port_t) fd, (vm_offset_t) offset,
+ memobj_rd, (vm_offset_t) offset,
flags & (MAP_COPY|MAP_PRIVATE),
vmprot, VM_PROT_ALL,
(flags & MAP_SHARED)
? VM_INHERIT_SHARE : VM_INHERIT_COPY);
}
+ if ((flags & MAP_ANON) == 0)
+ __mach_port_deallocate (__mach_task_self (), memobj_rd);
+
return err ? (__ptr_t) __hurd_fail (err) : (__ptr_t) mapaddr;
}