ref: a0a85448f88882e81a0adfc9bc67c761ccba2a95
dir: /src/libmach/armember.c/
#include <errno.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <scc/ar.h> #include <scc/mach.h> static char * getfname(struct ar_hdr *hdr, char *dst) { char *p; int i; memcpy(dst, hdr->ar_name, SARNAM); dst[SARNAM] = '\0'; for (i = SARNAM-1; i > 0; i--) { if (dst[i] != ' ' && dst[i] != '/') break; dst[i] = '\0'; } return dst; } long armember(FILE *fp, char *member) { struct ar_hdr hdr; long siz; if (fread(&hdr, sizeof(hdr), 1, fp) != 1) return (feof(fp)) ? 0 : -1; if (strncmp(hdr.ar_fmag, ARFMAG, sizeof(hdr.ar_fmag))) { errno = ERANGE; return -1; } siz = strtol(hdr.ar_size, NULL, 0); if (siz & 1) siz++; if (siz == 0) { errno = ERANGE; return -1; } getfname(&hdr, member); return sizeof(hdr) + siz; }