1 /*-
2  * Copyright (c) 2006,2008-2011 Joseph Koshy
42 ELFTC_VCSID("$Id: libelf_open.c 3007 2014-03-22 08:10:14Z jkoshy $");
76 			assert(bufsz - datasz > 0);  in _libelf_read_special_file()
78 			if ((readsz = read(fd, t, bufsz - datasz)) <= 0)  in _libelf_read_special_file()
127 	void *m;  in _libelf_open_object()  local
128 	mode_t mode;  in _libelf_open_object()  local
140 	mode = sb.st_mode;  in _libelf_open_object()
146 	if (!S_ISREG(mode) && !S_ISCHR(mode) && !S_ISFIFO(mode) &&  in _libelf_open_object()
147 	    !S_ISSOCK(mode)) {  in _libelf_open_object()
153 	 * For ELF_C_WRITE mode, allocate and return a descriptor.  in _libelf_open_object()
158 			e->e_byteorder = LIBELF_PRIVATE(byteorder);  in _libelf_open_object()
159 			e->e_fd = fd;  in _libelf_open_object()
160 			e->e_cmd = c;  in _libelf_open_object()
161 			if (!S_ISREG(mode))  in _libelf_open_object()
162 				e->e_flags |= LIBELF_F_SPECIAL_FILE;  in _libelf_open_object()
170 	 * ELF_C_READ and ELF_C_RDWR mode.  in _libelf_open_object()
172 	m = NULL;  in _libelf_open_object()
174 	if (S_ISREG(mode)) {  in _libelf_open_object()
189 		 * For objects opened in ELF_C_RDWR mode, when  in _libelf_open_object()
194 		m = mmap(NULL, fsize, PROT_READ, MAP_PRIVATE, fd, (off_t) 0);  in _libelf_open_object()
196 		if (m == MAP_FAILED)  in _libelf_open_object()
197 			m = NULL;  in _libelf_open_object()
206 		if (m == NULL) {  in _libelf_open_object()
207 			if ((m = malloc(fsize)) == NULL) {  in _libelf_open_object()
212 			if (read(fd, m, fsize) != (ssize_t) fsize) {  in _libelf_open_object()
214 				free(m);  in _libelf_open_object()
220 	} else if ((m = _libelf_read_special_file(fd, &fsize)) != NULL)  in _libelf_open_object()
225 	if ((e = _libelf_memory(m, fsize, reporterror)) == NULL) {  in _libelf_open_object()
229 			free(m);  in _libelf_open_object()
232 			(void) munmap(m, fsize);  in _libelf_open_object()
237 	/* ar(1) archives aren't supported in RDWR mode. */  in _libelf_open_object()
238 	if (c == ELF_C_RDWR && e->e_kind == ELF_K_AR) {  in _libelf_open_object()
244 	e->e_flags |= flags;  in _libelf_open_object()
245 	e->e_fd = fd;  in _libelf_open_object()
246 	e->e_cmd = c;  in _libelf_open_object()