FreeCalypso > hg > freecalypso-tools
view ffstools/tiffs-rd/ls.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 | 1f27fc13eab7 |
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/* * This C module implements the ls and lsino commands. */ #include <sys/types.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include "types.h" #include "struct.h" #include "globals.h" #include "pathname.h" static void segment_size_callback(inf, opaque) struct inode_info *inf; u_long opaque; { size_t *accump = (size_t *) opaque; struct chunkinfo chi; size_extra_chunk(inf, &chi); *accump += chi.len; } size_t get_file_size(seghead_ino, deleted) { struct chunkinfo chi; size_t accum; size_head_chunk(inode_info[seghead_ino], &chi); accum = chi.len; iterate_seg_file(seghead_ino, segment_size_callback, (u_long) &accum, deleted, 0); return(accum); } static void segment_ls_callback(inf, opaque) struct inode_info *inf; u_long opaque; { struct chunkinfo chi; size_extra_chunk(inf, &chi); if (verbose2 > 1) printf("seg #%04x @%08x length=%lu\n", inf->ino, inf->offset, (u_long) chi.len); else printf("seg #%04x length=%lu\n", inf->ino, (u_long) chi.len); } ls_seg_file(seghead_ino, deleted) { struct inode_info *inf = inode_info[seghead_ino]; struct chunkinfo chi; size_head_chunk(inf, &chi); printf("%lu bytes in seghead", (u_long) chi.len); if (verbose2 > 1) printf(", starting at offset %lx", (u_long)(inf->byte_after_name - image)); putchar('\n'); iterate_seg_file(seghead_ino, segment_ls_callback, 0L, deleted, verbose2 > 1); } void ls_tree_callback(pathname, ino, depth) char *pathname; { struct inode_info *inf = inode_info[ino]; u_long size; char readonly; if (inf->type & 0x10) readonly = ' '; else readonly = 'r'; switch (inf->type) { case 0xE1: case 0xF1: size = get_file_size(ino, 0); printf("f%c %7lu %s\n", readonly, size, pathname); if (verbose2) ls_seg_file(ino, 0); return; case 0xE2: case 0xF2: printf("d%c %s\n", readonly, pathname); return; case 0xE3: case 0xF3: printf("l%c %s\n", readonly, pathname); return; default: fprintf(stderr, "BUG: bad inode byte %02X reached ls_tree_callback()\n", inf->type); exit(1); } } ls_by_pathname(pathname) char *pathname; { int ino; struct inode_info *inf; char *type; printf("%s\n", pathname); ino = find_pathname(pathname); printf("inode #%x\n", ino); inf = inode_info[ino]; switch (inf->type) { case 0xE1: type = "read-only file"; break; case 0xF1: type = "file"; break; case 0xF2: type = "directory"; break; case 0xF3: type = "symlink"; break; default: type = "???"; } printf("object type %02X (%s)\n", inf->type, type); if (!validate_obj_name(ino, ino == root_inode)) { printf("No valid object name in the chunk!\n"); exit(1); } printf("object name: %s\n", inf->dataptr); if (inf->type == 0xF1 || inf->type == 0xE1) { printf("total size: %lu bytes\n", (u_long) get_file_size(ino, 0)); if (verbose2) ls_seg_file(ino, 0); } putchar('\n'); } cmd_ls(argc, argv) char **argv; { extern int optind; int c; read_ffs_image(); find_inode_block(); alloc_inode_table(); find_root_inode(); optind = 0; while ((c = getopt(argc, argv, "v")) != EOF) switch (c) { case 'v': verbose2++; continue; default: fprintf(stderr, "usage: ls [-v[v]] [pathname...]\n"); exit(1); } if (optind >= argc) { traverse_visible_tree(ls_tree_callback); exit(0); } for (; optind < argc; optind++) ls_by_pathname(argv[optind]); exit(0); } lsino_all() { int ino, last_ino = 0; struct inode_info *inf; char pathname[PATHNAME_BUF_SIZE], typech; int pathstat; char descend_str[8], sibling_str[8]; for (ino = 1; ino < inode_limit; ino++) { if (!validate_inode(ino)) continue; if (ino != last_ino + 1) printf("GAP in inode numbers\n"); inf = inode_info[ino]; pathstat = pathname_of_inode(ino, pathname); if (pathstat < 0) strcpy(pathname, "-nopath-"); switch (inf->type) { case 0x00: typech = '~'; break; case 0xE1: case 0xF1: typech = 'f'; break; case 0xF2: typech = 'd'; break; case 0xF3: typech = 'l'; break; case 0xF4: typech = '.'; break; default: typech = '?'; } printf("#%04x %c %s\n", ino, typech, pathname); if (inf->type && !(inf->type & 0x10)) printf("\tread-only object\n"); if (ino == root_inode) printf("\tactive root\n"); else if (inf->nparents < 1) printf("\torphan\n"); else if (inf->nparents > 1) printf("\tparent: #%x (%d)\n", inf->parent, inf->nparents); else if (pathstat < 0 || verbose2) printf("\tparent: #%x\n", inf->parent); if (verbose2 > 1) { if (inf->descend) sprintf(descend_str, "#%x", inf->descend); else strcpy(descend_str, "null"); if (inf->sibling) sprintf(sibling_str, "#%x", inf->sibling); else strcpy(sibling_str, "null"); printf("\tchild: %s, sibling: %s\n", descend_str, sibling_str); } if (!inf->len) printf("\treclaimed\n"); last_ino = ino; } exit(0); } void lsino_one(ino, assume_file) { struct inode_info *inf; char pathname[PATHNAME_BUF_SIZE], *type; if (!validate_inode(ino)) { fprintf(stderr, "lsino: specified inode number is invalid\n"); exit(1); } printf("inode #%x\n", ino); inf = inode_info[ino]; if (pathname_of_inode(ino, pathname) >= 0) printf("Pathname: %s\n", pathname); else printf("No pathname found\n"); inf = inode_info[ino]; switch (inf->type) { case 0x00: type = "deleted"; break; case 0xE1: type = "read-only file"; break; case 0xF1: type = "file"; break; case 0xF2: type = "directory"; break; case 0xF3: type = "symlink"; break; case 0xF4: type = "segment"; break; default: type = "???"; } printf("object type %02X (%s)\n", inf->type, type); if (!inf->len) { printf("This inode has been reclaimed\n\n"); return; } if (validate_obj_name(ino, 1)) printf("object name: %s\n", inf->dataptr); else { printf("No valid object name in the chunk\n\n"); return; } if (inf->type == 0xF1 || inf->type == 0xE1 || !inf->type && assume_file) { printf("total size: %lu bytes\n", (u_long) get_file_size(ino, !inf->type)); if (verbose2) ls_seg_file(ino, !inf->type); } putchar('\n'); } cmd_lsino(argc, argv) char **argv; { extern int optind; int c, assume_file = 0, ino; read_ffs_image(); find_inode_block(); alloc_inode_table(); find_root_inode(); treewalk_all(); optind = 0; while ((c = getopt(argc, argv, "fv")) != EOF) switch (c) { case 'f': assume_file++; continue; case 'v': verbose2++; continue; default: fprintf(stderr, "usage: lsino [-v[v]] [ino...]\n"); exit(1); } if (optind >= argc) return lsino_all(); for (; optind < argc; optind++) { ino = strtoul(argv[optind], 0, 16); lsino_one(ino, assume_file); } exit(0); }