FreeCalypso > hg > freecalypso-tools
view rvinterf/tmsh/ffs2.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 | 2159f260ed13 |
children |
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/* * In this module we are going to implement TMFFS2 functionality. */ #include <sys/types.h> #include <stdio.h> #include <string.h> #include <strings.h> #include <stdlib.h> #include "limits.h" #include "localtypes.h" #include "etm.h" #include "ffs.h" #include "tmffs2.h" #include "exitcodes.h" cmd_ffs2_close(argc, argv) char **argv; { u_char cmdpkt[5]; cmdpkt[1] = ETM_FFS2; cmdpkt[2] = TMFFS_CLOSE; cmdpkt[3] = strtoul(argv[1], 0, 0); send_etm_cmd(cmdpkt, 3); return(0); } cmd_ffs2_delete(argc, argv) char **argv; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int slen; slen = strlen(argv[1]); if (slen >= TMFFS_STRING_SIZE) { printf("error: pathname arg exceeds string length limit\n"); return(ERROR_USAGE); } dp = cmdpkt + 1; *dp++ = ETM_FFS2; *dp++ = TMFFS_REMOVE; *dp++ = slen + 1; strcpy(dp, argv[1]); dp += slen + 1; send_etm_cmd(cmdpkt, dp - cmdpkt - 1); return(0); } cmd_ffs2_format(argc, argv) char **argv; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int 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; send_etm_cmd(cmdpkt, dp - cmdpkt - 1); return(0); } cmd_ffs2_mkdir(argc, argv) char **argv; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int slen; slen = strlen(argv[1]); if (slen >= TMFFS_STRING_SIZE) { printf("error: pathname arg exceeds string length limit\n"); return(ERROR_USAGE); } dp = cmdpkt + 1; *dp++ = ETM_FFS2; *dp++ = TMFFS_MKDIR; *dp++ = slen + 1; strcpy(dp, argv[1]); dp += slen + 1; send_etm_cmd(cmdpkt, dp - cmdpkt - 1); return(0); } cmd_ffs2_open(argc, argv) char **argv; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int slen; slen = strlen(argv[1]); if (slen >= TMFFS_STRING_SIZE) { printf("error: pathname arg exceeds string length limit\n"); return(ERROR_USAGE); } dp = cmdpkt + 1; *dp++ = ETM_FFS2; *dp++ = TMFFS_OPEN; *dp++ = slen + 1; strcpy(dp, argv[1]); dp += slen + 1; *dp++ = strtoul(argv[2], 0, 16); send_etm_cmd(cmdpkt, dp - cmdpkt - 1); return(0); } cmd_ffs2_opendir(argc, argv) char **argv; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int slen; slen = strlen(argv[1]); if (slen >= TMFFS_STRING_SIZE) { printf("error: pathname arg exceeds string length limit\n"); return(ERROR_USAGE); } dp = cmdpkt + 1; *dp++ = ETM_FFS2; *dp++ = TMFFS_OPENDIR; *dp++ = slen + 1; strcpy(dp, argv[1]); dp += slen + 1; send_etm_cmd(cmdpkt, dp - cmdpkt - 1); return(0); } cmd_ffs2_preformat() { u_char cmdpkt[6]; cmdpkt[1] = ETM_FFS2; cmdpkt[2] = TMFFS_PREFORMAT; /* magic is 0xDEAD, 16-bit little-endian */ cmdpkt[3] = 0xAD; cmdpkt[4] = 0xDE; send_etm_cmd(cmdpkt, 4); return(0); } cmd_ffs2_query(argc, argv) char **argv; { u_char cmdpkt[5]; cmdpkt[1] = ETM_FFS2; cmdpkt[2] = TMFFS_QUERY; cmdpkt[3] = strtoul(argv[1], 0, 0); send_etm_cmd(cmdpkt, 3); return(0); } cmd_ffs2_readfd(argc, argv) char **argv; { u_char cmdpkt[6]; cmdpkt[1] = ETM_FFS2; cmdpkt[2] = TMFFS_READ; cmdpkt[3] = strtoul(argv[1], 0, 0); cmdpkt[4] = strtoul(argv[2], 0, 0); send_etm_cmd(cmdpkt, 4); return(0); } cmd_ffs2_readfile(argc, argv) char **argv; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int slen; slen = strlen(argv[1]); if (slen >= TMFFS_STRING_SIZE) { printf("error: pathname arg exceeds string length limit\n"); return(ERROR_USAGE); } dp = cmdpkt + 1; *dp++ = ETM_FFS2; *dp++ = TMFFS_FILE_READ; *dp++ = slen + 1; strcpy(dp, argv[1]); dp += slen + 1; *dp++ = strtoul(argv[2], 0, 0); send_etm_cmd(cmdpkt, dp - cmdpkt - 1); return(0); } cmd_ffs2_stat(argc, argv) char **argv; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int slen; slen = strlen(argv[1]); if (slen >= TMFFS_STRING_SIZE) { printf("error: pathname arg exceeds string length limit\n"); return(ERROR_USAGE); } dp = cmdpkt + 1; *dp++ = ETM_FFS2; *dp++ = TMFFS_STAT; *dp++ = slen + 1; strcpy(dp, argv[1]); dp += slen + 1; send_etm_cmd(cmdpkt, dp - cmdpkt - 1); return(0); } cmd_ffs2_version() { u_char cmdpkt[4]; cmdpkt[1] = ETM_FFS2; cmdpkt[2] = TMFFS_VERSION; send_etm_cmd(cmdpkt, 2); return(0); } cmd_ffs2_wrfile(argc, argv) char **argv; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int slen, slen2; slen = strlen(argv[1]); if (slen >= TMFFS_STRING_SIZE) { printf("error: pathname arg exceeds string length limit\n"); return(ERROR_USAGE); } slen2 = strlen(argv[2]); if (slen2 > 64) { printf("error: write test data argument is too long\n"); return(ERROR_USAGE); } dp = cmdpkt + 1; *dp++ = ETM_FFS2; *dp++ = TMFFS_FILE_WRITE; *dp++ = slen + 1; strcpy(dp, argv[1]); dp += slen + 1; *dp++ = slen2; /* no NUL-termination on test data */ strcpy(dp, argv[2]); dp += slen2; *dp++ = FFS_O_CREATE | FFS_O_TRUNC; send_etm_cmd(cmdpkt, dp - cmdpkt - 1); return(0); } cmd_ffs2_writefd(argc, argv) char **argv; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int slen2; slen2 = strlen(argv[2]); if (slen2 > 64) { printf("error: write test data argument is too long\n"); return(ERROR_USAGE); } dp = cmdpkt + 1; *dp++ = ETM_FFS2; *dp++ = TMFFS_WRITE; *dp++ = strtoul(argv[1], 0, 0); *dp++ = slen2; /* no NUL-termination on test data */ strcpy(dp, argv[2]); dp += slen2; send_etm_cmd(cmdpkt, dp - cmdpkt - 1); return(0); } cmd_ffs2_xlstat(argc, argv) char **argv; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int slen; slen = strlen(argv[1]); if (slen >= TMFFS_STRING_SIZE) { printf("error: pathname arg exceeds string length limit\n"); return(ERROR_USAGE); } dp = cmdpkt + 1; *dp++ = ETM_FFS2; *dp++ = TMFFS_XLSTAT; *dp++ = slen + 1; strcpy(dp, argv[1]); dp += slen + 1; send_etm_cmd(cmdpkt, dp - cmdpkt - 1); return(0); } static struct cmdtab { char *cmd; int minargs; int maxargs; int (*func)(); } ffs2_cmds[] = { {"close", 1, 1, cmd_ffs2_close}, {"delete", 1, 1, cmd_ffs2_delete}, {"format", 1, 1, cmd_ffs2_format}, {"mkdir", 1, 1, cmd_ffs2_mkdir}, {"open", 2, 2, cmd_ffs2_open}, {"opendir", 1, 1, cmd_ffs2_opendir}, {"preformat", 0, 0, cmd_ffs2_preformat}, {"query", 1, 1, cmd_ffs2_query}, {"readfd", 2, 2, cmd_ffs2_readfd}, {"readfile", 2, 2, cmd_ffs2_readfile}, {"stat", 1, 1, cmd_ffs2_stat}, {"version", 0, 0, cmd_ffs2_version}, {"wrfile", 2, 2, cmd_ffs2_wrfile}, {"writefd", 2, 2, cmd_ffs2_writefd}, {"xlstat", 1, 1, cmd_ffs2_xlstat}, {0, 0, 0, 0} }; cmd_ffs2(argc, argv) char **argv; { struct cmdtab *tp; int extargs; for (tp = ffs2_cmds; tp->cmd; tp++) if (!strcmp(tp->cmd, argv[1])) break; if (!tp->func) { printf("error: no such ffs2 command\n"); return(ERROR_USAGE); } extargs = argc - 2; if (extargs > tp->maxargs) { printf("error: too many arguments\n"); return(ERROR_USAGE); } if (extargs < tp->minargs) { printf("error: too few arguments\n"); return(ERROR_USAGE); } return tp->func(argc - 1, argv + 1); }