FreeCalypso > hg > freecalypso-tools
view rvinterf/etmsync/fspath.c @ 608:9d9c241f2c84
libserial-newlnx experimental change to set ASYNC_LOW_LATENCY
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Wed, 12 Feb 2020 06:23:22 +0000 |
parents | e7502631a0f9 |
children |
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/* * FFS pathname manipulation functions */ #include <sys/types.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include "ffs.h" #include "limits.h" #include "ffslimits.h" #include "exitcodes.h" validate_ffs_pathname(cand) char *cand; { char *cp; int depth, c; cp = cand; if (*cp++ != '/') { fprintf(stderr, "error: FFS pathnames must be absolute\n"); return(-1); } for (depth = 0; *cp; depth++) { if (*cp == '/') { fprintf(stderr, "error: FFS pathname must not contain duplicate slashes\n"); return(-1); } for (c = 0; *cp && *cp != '/'; cp++) c++; if (c > MAX_FN_COMPONENT) { fprintf(stderr, "error: FFS pathname component is too long\n"); return(-1); } if (!*cp) continue; cp++; if (!*cp) { fprintf(stderr, "error: FFS pathname must not end with a trailing slash\n"); return(-1); } } if (depth > MAX_NAME_DEPTH) { fprintf(stderr, "error: FFS pathname exceeds depth limit\n"); return(-1); } return(depth); } char * pathname_for_ffs_child(parent, childbuf) char *parent, *childbuf; { int depth; char *cp; depth = validate_ffs_pathname(parent); if (depth < 0 || depth >= MAX_NAME_DEPTH) return(0); strcpy(childbuf, parent); cp = index(childbuf, '\0'); if (depth) *cp++ = '/'; return(cp); }