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author | Ludovic Courtès <ludo@gnu.org> | 2010-07-17 16:24:39 +0200 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2011-04-03 15:47:34 +0000 |
commit | a8744157214a302d84c8959b1ae99abe3ae2d7d2 (patch) | |
tree | 1cfebbd27e311beee3a6a1660ff7d08624ca20d8 /serverboot/gunzip.c | |
parent | bebc64a9a0f064a0e5f8a3549aa01aa9ac79a2e9 (diff) | |
download | hurd-a8744157214a302d84c8959b1ae99abe3ae2d7d2.tar.gz hurd-a8744157214a302d84c8959b1ae99abe3ae2d7d2.tar.bz2 hurd-a8744157214a302d84c8959b1ae99abe3ae2d7d2.zip |
Remove `serverboot'; fix "make dist" in `mach-defpager'.
* serverboot/default_pager.c, serverboot/kalloc.c, serverboot/queue.h,
serverboot/wiring.c, serverboot/wiring.h: Move to `mach-defpager/'.
* serverboot/Makefile, serverboot/assert.h, serverboot/bootstrap.c,
serverboot/bunzip2.c, serverboot/def_pager_setup.c, serverboot/defs.h,
serverboot/dir.h, serverboot/disk_inode.h,
serverboot/disk_inode_ffs.h, serverboot/elf-load.c, serverboot/exec.c,
serverboot/ext2_file_io.c, serverboot/ffs_compat.c,
serverboot/ffs_compat.h, serverboot/ffs_file_io.c,
serverboot/file_io.c, serverboot/file_io.h, serverboot/fs.h,
serverboot/gets.c, serverboot/gunzip.c, serverboot/load.c,
serverboot/mach-exec.h, serverboot/minix_ffs_compat.c,
serverboot/minix_ffs_compat.h, serverboot/minix_file_io.c,
serverboot/minix_fs.h, serverboot/minix_super.h, serverboot/panic.c,
serverboot/strfcns.c: Remove.
* mach-defpager/Makefile (LCLHDRS): New variable.
(vpath): Remove.
(CPPFLAGS): Remove `-I$(srcdir)/../serverboot'.
* mach-defpager/setup.c (page_aligned): Make public.
Diffstat (limited to 'serverboot/gunzip.c')
-rw-r--r-- | serverboot/gunzip.c | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/serverboot/gunzip.c b/serverboot/gunzip.c deleted file mode 100644 index f74da111..00000000 --- a/serverboot/gunzip.c +++ /dev/null @@ -1,188 +0,0 @@ -/* Modified by okuji@kuicr.kyoto-u.ac.jp for use in serverboot. */ -/* Decompressing store backend - - Copyright (C) 1997 Free Software Foundation, Inc. - Written by Miles Bader <miles@gnu.ai.mit.edu> - This file is part of the GNU Hurd. - - The GNU Hurd is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License as - published by the Free Software Foundation; either version 2, or (at - your option) any later version. - - The GNU Hurd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */ - -#include <stdio.h> -#include <string.h> -#include <setjmp.h> -#include <cthreads.h> -#include <errno.h> - -#include <file_io.h> - -/* gzip.h makes several annoying defines & decls, which we have to work - around. */ -#define file_t gzip_file_t -#include "gzip.h" -#undef file_t -#undef head - -#define IN_BUFFERING (256*1024) -#define OUT_BUFFERING (512*1024) - -static struct mutex unzip_lock = MUTEX_INITIALIZER; - -/* Uncompress the contents of FROM, which should contain a valid gzip file, - into memory, returning the result buffer in BUF & BUF_LEN. */ -int -serverboot_gunzip (struct file *from, void **buf, size_t *buf_len) -{ - /* Entry points to unzip engine. */ - int get_method (int); - extern long int bytes_out; - /* Callbacks from unzip for I/O and error interface. */ - extern int (*unzip_read) (char *buf, size_t maxread); - extern void (*unzip_write) (const char *buf, size_t nwrite); - extern void (*unzip_read_error) (void); - extern void (*unzip_error) (const char *msg); - - /* How we return errors from our hook functions. */ - jmp_buf zerr_jmp_buf; - int zerr; - - size_t offset = 0; /* Offset of read point in FROM. */ - - /* Read at most MAXREAD (or 0 if eof) bytes into BUF from our current - position in FROM. */ - int zread (char *buf, size_t maxread) - { - vm_size_t resid; - size_t did_read; - - if (from->f_size - offset < maxread) - did_read = from->f_size - offset; - else - did_read = maxread; - - zerr = read_file (from, offset, buf, did_read, &resid); - if (zerr) - longjmp (zerr_jmp_buf, 1); - - did_read -= resid; - offset += did_read; - - return did_read; - } - - size_t out_buf_offs = 0; /* Position in the output buffer. */ - - /* Write uncompress data to our output buffer. */ - void zwrite (const char *wbuf, size_t nwrite) - { - size_t old_buf_len = *buf_len; - - if (out_buf_offs + nwrite > old_buf_len) - /* Have to grow the output buffer. */ - { - void *old_buf = *buf; - void *new_buf = old_buf + old_buf_len; /* First try. */ - size_t new_buf_len = round_page (old_buf_len + old_buf_len + nwrite); - - /* Try to grow the buffer. */ - zerr = - vm_allocate (mach_task_self (), - (vm_address_t *)&new_buf, new_buf_len - old_buf_len, - 0); - if (zerr) - /* Can't do that, try to make a bigger buffer elsewhere. */ - { - new_buf = old_buf; - zerr = - vm_allocate (mach_task_self (), - (vm_address_t *)&new_buf, new_buf_len, 1); - if (zerr) - longjmp (zerr_jmp_buf, 1); - - if (out_buf_offs > 0) - /* Copy the old buffer into the start of the new & free it. */ - bcopy (old_buf, new_buf, out_buf_offs); - - vm_deallocate (mach_task_self (), - (vm_address_t)old_buf, old_buf_len); - - *buf = new_buf; - } - - *buf_len = new_buf_len; - } - - bcopy (wbuf, *buf + out_buf_offs, nwrite); - out_buf_offs += nwrite; - } - - void zreaderr (void) - { - zerr = EIO; - longjmp (zerr_jmp_buf, 1); - } - void zerror (const char *msg) - { - zerr = EINVAL; - longjmp (zerr_jmp_buf, 2); - } - - /* Try to guess a reasonable output buffer size. */ - *buf_len = round_page (from->f_size * 2); - zerr = vm_allocate (mach_task_self (), (vm_address_t *)buf, *buf_len, 1); - if (zerr) - return zerr; - - mutex_lock (&unzip_lock); - - unzip_read = zread; - unzip_write = zwrite; - unzip_read_error = zreaderr; - unzip_error = zerror; - - if (! setjmp (zerr_jmp_buf)) - { - if (get_method (0) != 0) - /* Not a happy gzip file. */ - zerr = EINVAL; - else - /* Matched gzip magic number. Ready to unzip. - Set up the output stream and let 'er rip. */ - { - /* Call the gunzip engine. */ - bytes_out = 0; - unzip (17, 23); /* Arguments ignored. */ - zerr = 0; - } - } - - mutex_unlock (&unzip_lock); - - if (zerr) - { - if (*buf_len > 0) - vm_deallocate (mach_task_self (), (vm_address_t)*buf, *buf_len); - } - else if (out_buf_offs < *buf_len) - /* Trim the output buffer to be the right length. */ - { - size_t end = round_page (out_buf_offs); - if (end < *buf_len) - vm_deallocate (mach_task_self (), - (vm_address_t)(*buf + end), *buf_len - end); - *buf_len = out_buf_offs; - } - - return zerr; -} |