FreeCalypso > hg > freecalypso-tools
view ffstools/tiffs-rd/xtr.c @ 619:f82551c77e58
libserial-newlnx: ASYNC_LOW_LATENCY patch reverted
Reports from Das Signal indicate that loadtools performance on Debian
is about the same as on Slackware, and that including or omitting the
ASYNC_LOW_LATENCY patch from Serg makes no difference. Because the
patch in question does not appear to be necessary, it is being reverted
until and unless someone other than Serg reports an actual real-world
system on which loadtools operation times are slowed compared to the
Mother's Slackware reference and on which Slackware-like performance
can be restored by setting the ASYNC_LOW_LATENCY flag.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Thu, 27 Feb 2020 01:09:48 +0000 |
parents | e7502631a0f9 |
children |
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/* * This C module implements the xtr command. */ #include <sys/types.h> #include <sys/file.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <unistd.h> #include "types.h" #include "struct.h" #include "globals.h" #include "pathname.h" static void dump_head_chunk(fd, headino) { struct inode_info *inf = inode_info[headino]; struct chunkinfo chi; if (size_head_chunk(inf, &chi)) write(fd, chi.start, chi.len); } static void dump_extra_chunk(inf, opaque) struct inode_info *inf; u_long opaque; { int fd = (int)opaque; struct chunkinfo chi; size_extra_chunk(inf, &chi); write(fd, chi.start, chi.len); } extract_file(relpath, headino) char *relpath; { int fd; fd = open(relpath, O_WRONLY|O_CREAT|O_TRUNC, 0666); if (fd < 0) { perror(relpath); exit(1); } dump_head_chunk(fd, headino); iterate_seg_file(headino, dump_extra_chunk, (u_long)fd, 0, 0); close(fd); } void xtr_tree_callback(pathname, ino, depth) char *pathname; { struct inode_info *inf = inode_info[ino]; switch (inf->type) { case 0xE1: case 0xF1: /* skip /.journal; those who need it can cat it */ if (strcmp(pathname, "/.journal")) extract_file(pathname + 1, ino); return; case 0xE2: case 0xF2: if (mkdir(pathname + 1, 0777) < 0) { perror(pathname + 1); exit(1); } return; case 0xE3: case 0xF3: fprintf(stderr, "symlink at %s ignored: symlink extraction not implemented yet\n", pathname); return; default: fprintf(stderr, "BUG: bad inode byte %02X reached xtr_tree_callback()\n", inf->type); exit(1); } } cmd_xtr(argc, argv) char **argv; { if (argc != 2) { fprintf(stderr, "usage: xtr dest-dir\n"); exit(1); } read_ffs_image(); find_inode_block(); alloc_inode_table(); find_root_inode(); if (chdir(argv[1]) < 0) { perror(argv[1]); exit(1); } traverse_visible_tree(xtr_tree_callback); exit(0); }