FreeCalypso > hg > freecalypso-tools
view rvinterf/etmsync/fsread.c @ 407:19e5a3e2f9c0
fcup-settime: moved time() retrieval a little closer to the output
A fundamental problem with all simple time transfer tools is that there is
always some delay between the time retrieval on the source system and that
transmitted time being set on the destination, and the resulting time
on the destination system is off by that delay amount. This delay cannot
be fully eliminated when working in a simple environment like ours,
but we should make our best effort to minimize it. In the present case,
moving the atinterf_init() call before the time() retrieval should make
a teensy-tiny improvement.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 11 Aug 2018 21:52:17 +0000 |
parents | d332fbf5c145 |
children | 74d284add54d |
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/* * Commands for reading the content of a GSM device's file system */ #include <sys/types.h> #include <sys/param.h> #include <sys/stat.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <unistd.h> #include "etm.h" #include "ffs.h" #include "tmffs2.h" #include "limits.h" #include "ffslimits.h" #include "localtypes.h" #include "localstruct.h" #include "exitcodes.h" extern char *pathname_for_ffs_child(); void ll_print_line(pathname, stat) char *pathname; struct stat_info *stat; { char readonly; char rlbuf[256]; if (stat->flags & OF_READONLY) readonly = 'r'; else readonly = ' '; switch (stat->type) { case OT_FILE: printf("f%c %7u %s\n", readonly, stat->size, pathname); return; case OT_DIR: printf("d%c %s\n", readonly, pathname); return; case OT_LINK: if (do_readlink_sancheck(pathname, rlbuf)) strcpy(rlbuf, "<invalid>"); printf("l%c %s -> %s\n", readonly, pathname, rlbuf); return; default: printf("?%c %s\n", readonly, pathname); } } do_ls_long(lsarg) char *lsarg; { struct stat_info stat; u_char rdstate[4]; char rdbuf[MAX_FN_COMPONENT+1], childpath[MAX_FULL_PATHNAME+1], *childp; int nument, i, rc; if (validate_ffs_pathname(lsarg) < 0) return(ERROR_USAGE); /* err msg already printed */ rc = do_xlstat(lsarg, &stat); if (rc) return(rc); if (stat.type != OT_DIR) { ll_print_line(lsarg, &stat); return(0); } rc = do_opendir(lsarg, rdstate, &nument); if (rc) return(rc); if (!nument) { printf("<empty dir>\n"); return(0); } childp = pathname_for_ffs_child(lsarg, childpath); if (!childp) { printf("error: non-empty dir at the limit of pathname depth\n"); return(ERROR_TARGET); } for (i = 0; i < nument; i++) { rc = do_readdir(rdstate, rdbuf, MAX_FN_COMPONENT+1); if (rc) return(rc); if (index(rdbuf, '/')) { printf("error: readdir result contains a slash\n"); return(ERROR_TARGET); } strcpy(childp, rdbuf); rc = do_xlstat(childpath, &stat); if (rc) { printf("xlstat failed on %s\n", childpath); return(rc); } ll_print_line(childpath, &stat); } return(0); } cmd_ll(argc, argv) char **argv; { return do_ls_long(argv[1]); } void hexdump_line(offset, buf, len) u_char *buf; { int i, c; printf("%02X: ", offset); for (i = 0; i < 16; i++) { if (i < len) printf("%02X ", buf[i]); else fputs(" ", stdout); if (i == 7 || i == 15) putchar(' '); } for (i = 0; i < len; i++) { c = buf[i]; if (c < ' ' || c > '~') c = '.'; putchar(c); } putchar('\n'); } cmd_hd(argc, argv) char **argv; { u_char databuf[MAX_READ_DATA]; int rc, sz, off, l; rc = do_file_read(argv[1], databuf, MAX_READ_DATA, &sz); if (rc) return(rc); printf("%d bytes read\n", sz); for (off = 0; off < sz; off += 16) { l = sz - off; if (l > 16) l = 16; hexdump_line(off, databuf + off, l); } return(0); } cpout_object(ffspath, hostpath) char *ffspath, *hostpath; { struct stat_info stat; int rc; rc = do_xlstat(ffspath, &stat); if (rc) return(rc); switch (stat.type) { case OT_FILE: return cpout_file(ffspath, hostpath); case OT_DIR: return cpout_dir(ffspath, hostpath); case OT_LINK: printf("skipping FFS symlink %s\n", ffspath); return(0); default: printf("error: stat returned bad objtype for %s\n", ffspath); return(ERROR_TARGET); } } cpout_file(ffspath, hostpath) char *ffspath, *hostpath; { int tfd; FILE *of; u_char buf[MAX_READ_DATA]; int rc, sz; printf("copying %s\n", ffspath); rc = fd_open(ffspath, FFS_O_RDONLY, &tfd); if (rc) return(rc); of = fopen(hostpath, "w"); if (!of) { perror(hostpath); fd_close(tfd); return(ERROR_UNIX); } for (;;) { rc = fd_read(tfd, buf, MAX_READ_DATA, &sz); if (rc) { fd_close(tfd); fclose(of); return(rc); } if (!sz) break; fwrite(buf, 1, sz, of); } fclose(of); return fd_close(tfd); } cpout_dir(ffspath_dir, hostpath_dir) char *ffspath_dir, *hostpath_dir; { u_char rdstate[4]; char rdbuf[MAX_FN_COMPONENT+1], ffspath_child[MAX_FULL_PATHNAME+1]; char *childp; char hostpath_child[MAXPATHLEN]; int nument, i, rc, childerr; printf("dir %s\n", ffspath_dir); rc = host_mkdir(hostpath_dir); if (rc) return(rc); rc = do_opendir(ffspath_dir, rdstate, &nument); if (rc) return(rc); if (!nument) return(0); childp = pathname_for_ffs_child(ffspath_dir, ffspath_child); if (!childp) { printf("error: non-empty dir at the limit of pathname depth\n"); return(ERROR_TARGET); } childerr = 0; for (i = 0; i < nument; i++) { rc = do_readdir(rdstate, rdbuf, MAX_FN_COMPONENT+1); if (rc) return(rc); if (index(rdbuf, '/')) { printf("error: readdir result contains a slash\n"); return(ERROR_TARGET); } strcpy(childp, rdbuf); if (rdbuf[0] == '.') { printf("skipping %s\n", ffspath_child); continue; } if (strlen(hostpath_dir) + strlen(rdbuf) + 2 > sizeof hostpath_child) { fprintf(stderr, "error: host side pathname buffer overflow\n"); return(ERROR_UNIX); } sprintf(hostpath_child, "%s/%s", hostpath_dir, rdbuf); rc = cpout_object(ffspath_child, hostpath_child); if (rc && rc != ERROR_TARGET) return(rc); if (rc) childerr = rc; } return(childerr); } cmd_cpout(argc, argv) char **argv; { if (validate_ffs_pathname(argv[1]) < 0) return(ERROR_USAGE); /* err msg already printed */ return cpout_object(argv[1], argv[2]); } cmd_cpout_file(argc, argv) char **argv; { return cpout_file(argv[1], argv[2]); }