FreeCalypso > hg > freecalypso-tools
view rvinterf/etmsync/fsmisc.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 | e434df27e4d9 |
children |
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/* * Miscellaneous (dangerous!) FFS2 operations */ #include <sys/types.h> #include <ctype.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include "etm.h" #include "ffs.h" #include "ffserr.h" #include "tmffs2.h" #include "limits.h" #include "ffslimits.h" #include "localtypes.h" #include "localstruct.h" #include "exitcodes.h" extern u_char rvi_msg[]; extern int rvi_msg_len; cmd_format(argc, argv) char **argv; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int rc, slen; slen = strlen(argv[1]); if (slen >= TMFFS_STRING_SIZE) { printf("error: argument exceeds string length limit\n"); return(ERROR_USAGE); } dp = cmdpkt + 1; *dp++ = ETM_FFS2; *dp++ = TMFFS_FORMAT; *dp++ = slen + 1; strcpy(dp, argv[1]); dp += slen + 1; /* magic is 0x2BAD, 16-bit little-endian */ *dp++ = 0xAD; *dp++ = 0x2B; rc = etm_pkt_exch(cmdpkt, dp - cmdpkt - 1); if (rc) return(rc); if (rvi_msg_len != 5) { printf("error: TMFFS_FORMAT response has wrong length\n"); return(ERROR_TARGET); } if (rvi_msg[3]) { report_ffs_err("format", rvi_msg[3]); if (rvi_msg[3] == TMFFS_ERR_NOPREFORMAT) return(0); /* do not stop scripts */ else return(ERROR_TARGET); } return(0); } cmd_preformat() { u_char cmdpkt[6]; int rc; cmdpkt[1] = ETM_FFS2; cmdpkt[2] = TMFFS_PREFORMAT; /* magic is 0xDEAD, 16-bit little-endian */ cmdpkt[3] = 0xAD; cmdpkt[4] = 0xDE; rc = etm_pkt_exch(cmdpkt, 4); if (rc) return(rc); if (rvi_msg_len != 5) { printf("error: TMFFS_PREFORMAT response has wrong length\n"); return(ERROR_TARGET); } if (rvi_msg[3]) { report_ffs_err("preformat", rvi_msg[3]); return(ERROR_TARGET); } return(0); } cmd_set_imeisv(argc, argv) char **argv; { char *filename, *cp, digits[16]; u_char bytes[8]; int pcm_order, i; if (!strcmp(argv[1], "pcm")) { filename = "/pcm/IMEI"; pcm_order = 1; } else if (!strcmp(argv[1], "fc")) { filename = "/etc/IMEISV"; pcm_order = 0; } else { fprintf(stderr, "error: IMEISV storage type argument must be \"pcm\" or \"fc\"\n"); return(ERROR_USAGE); } cp = argv[2]; if (!isdigit(*cp)) { inv: fprintf(stderr, "error: 2nd argument must have 16 decimal digits\n"); return(ERROR_USAGE); } for (i = 0; i < 16; i++) { if (ispunct(*cp)) cp++; if (!isdigit(*cp)) goto inv; digits[i] = *cp++ - '0'; } if (*cp) goto inv; for (i = 0; i < 8; i++) bytes[i] = pcm_order ? digits[i*2+1] << 4 | digits[i*2] : digits[i*2] << 4 | digits[i*2+1]; printf("Writing \"%02X %02X %02X %02X %02X %02X %02X %02X\" into %s\n", bytes[0], bytes[1], bytes[2], bytes[3], bytes[4], bytes[5], bytes[6], bytes[7], filename); return do_short_fwrite(filename, bytes, 8); } cmd_set_pcm_string(argc, argv) char **argv; { char filename[16]; if (strcmp(argv[1], "CGMI") && strcmp(argv[1], "CGMM") && strcmp(argv[1], "CGMR") && strcmp(argv[1], "CGSN")) { fprintf(stderr, "error: \"%s\" is not a recognized PCM string file name\n", argv[1]); return(ERROR_USAGE); } sprintf(filename, "/pcm/%s", argv[1]); if (strlen(argv[2]) > 20) { fprintf(stderr, "error: %s string may not exceed 20 characters\n", filename); return(ERROR_USAGE); } return do_short_fwrite(filename, argv[2], strlen(argv[2])); } cmd_set_rfcap(argc, argv) char **argv; { return set_rfcap(argv[1]); }