ref: a0a85448f88882e81a0adfc9bc67c761ccba2a95
dir: /src/libmach/newmap.c/
#include <errno.h> #include <stdint.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include <scc/mach.h> #include "libmach.h" Map * newmap(int n, FILE *fp) { size_t vsiz; struct mapsec *p; Map *map; if (n > SIZE_MAX/sizeof(struct mapsec)) goto out_range; vsiz = n * sizeof(struct mapsec); if (vsiz > SIZE_MAX - sizeof(*map)) goto out_range; vsiz += sizeof(*map); if ((map = malloc(vsiz)) == NULL) return NULL; map->n = n; memset(map->sec, 0, vsiz); for (p = map->sec; n--; ++p) p->fp = fp; return map; out_range: errno = ERANGE; return NULL; }