ref: 50791b875552b0dc5748aa67c95776736f6ff4b7
dir: /sys/src/cmd/hgfs/util.c/
#include <u.h> #include <libc.h> #include <thread.h> #include "dat.h" #include "fns.h" ulong hashstr(char *s) { ulong h, t; char c; h = 0; while(c = *s++){ t = h & 0xf8000000; h <<= 5; h ^= t>>27; h ^= (ulong)c; } return h; } int getworkdir(char *work, char *path) { char buf[MAXPATH], *s; if(path != nil){ snprint(work, MAXPATH, "%s", path); cleanname(work); } else if(getwd(work, MAXPATH) == nil) return -1; for(;;){ snprint(buf, sizeof(buf), "%s/.hg", work); if(access(buf, AEXIST) == 0) return 0; if(path != nil) break; if((s = strrchr(work, '/')) == nil) break; *s = 0; } return -1; } int readfile(char *path, char *buf, int nbuf) { int fd, n; n = 0; if((fd = open(path, OREAD)) >= 0){ if((n = read(fd, buf, nbuf-1)) < 0) n = 0; close(fd); } buf[n] = '\0'; return n; }