diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/mach/hurd/dl-sysdep.c | 74 |
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; } |