FreeCalypso > hg > freecalypso-tools
view rvinterf/etmsync/symlink.c @ 319:cbb6ebf665fa
ffstools/Makefile: newcomp added to SUBDIR
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 17 Dec 2017 00:59:53 +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); }