FreeCalypso > hg > freecalypso-tools
view rvinterf/etmsync/symlink.c @ 416:30f6d1c32c6f
doc/Flash-boot-defect article removed (no longer relevant)
This article is no longer relevant because the issue in question
only affected one (1) defective FCDEV3B board which was not
and never will be sold.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 26 Oct 2018 07:11:08 +0000 |
parents | e7502631a0f9 |
children |
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/* * Commands for experimenting with FFS symlinks */ #include <sys/types.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.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 u_char rvi_msg[]; extern int rvi_msg_len; do_symlink(target, realobj) char *target, *realobj; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int rc, targlen, reallen; reallen = strlen(realobj); if (reallen >= TMFFS_STRING_SIZE) { printf("error: pathname arg exceeds string length limit\n"); return(ERROR_USAGE); } targlen = strlen(target); if (3 + (reallen+2) + (targlen+2) + 1 > MAX_PKT_TO_TARGET) { printf("error: symlink request fails to fit into packet\n"); return(ERROR_USAGE); } dp = cmdpkt + 1; *dp++ = ETM_FFS2; *dp++ = TMFFS_SYMLINK; *dp++ = reallen + 1; strcpy(dp, realobj); dp += reallen + 1; *dp++ = targlen + 1; strcpy(dp, target); dp += targlen + 1; rc = etm_pkt_exch(cmdpkt, dp - cmdpkt - 1); if (rc) return(rc); if (rvi_msg_len != 5) { printf("error: TMFFS_SYMLINK response has wrong length\n"); return(ERROR_TARGET); } if (rvi_msg[3]) { report_ffs_err("symlink", rvi_msg[3]); return(ERROR_TARGET); } return(0); } cmd_symlink(argc, argv) char **argv; { return do_symlink(argv[1], argv[2]); } do_readlink(pathname, databuf, rdret) char *pathname; u_char *databuf; int *rdret; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int rc, slen, sz; slen = strlen(pathname); 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_READLINK; *dp++ = slen + 1; strcpy(dp, pathname); dp += slen + 1; *dp++ = 0; /* dummy 2nd buffer */ rc = etm_pkt_exch(cmdpkt, dp - cmdpkt - 1); if (rc) return(rc); if (rvi_msg[3]) { report_ffs_err("readlink", rvi_msg[3]); return(ERROR_TARGET); } if (rvi_msg_len < 6) { *rdret = 0; return(0); } sz = rvi_msg[4]; if (rvi_msg_len != sz + 6) { printf("error: readlink response has wrong length\n"); return(ERROR_TARGET); } bcopy(rvi_msg + 5, databuf, sz); *rdret = sz; return(0); } cmd_readlink(argc, argv) char **argv; { u_char databuf[256]; int rc, sz, off, l; rc = do_readlink(argv[1], databuf, &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); } do_readlink_sancheck(pathname, databuf) char *pathname; u_char *databuf; { int rc, sz; rc = do_readlink(pathname, databuf, &sz); if (rc) return(rc); if (sz < 2 || databuf[sz-1]) { printf("error: readlink on %s returned garbage\n", pathname); return(ERROR_TARGET); } return(0); }