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-rw-r--r--libc/Android.bp2
-rw-r--r--libc/NOTICE42
-rw-r--r--libc/stdio/fmemopen.cpp156
-rw-r--r--libc/upstream-openbsd/lib/libc/stdio/fmemopen.c184
4 files changed, 182 insertions, 202 deletions
diff --git a/libc/Android.bp b/libc/Android.bp
index be1c6f9ed..842dae408 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -13,6 +13,7 @@ libc_common_src_files = [
"bionic/sigblock.c",
"bionic/siginterrupt.c",
"bionic/sigsetmask.c",
+ "stdio/fmemopen.cpp",
"stdio/fread.c",
"stdio/parsefloat.c",
"stdio/refill.c",
@@ -439,7 +440,6 @@ cc_library_static {
"upstream-openbsd/lib/libc/stdio/fgetwc.c",
"upstream-openbsd/lib/libc/stdio/fgetws.c",
"upstream-openbsd/lib/libc/stdio/flags.c",
- "upstream-openbsd/lib/libc/stdio/fmemopen.c",
"upstream-openbsd/lib/libc/stdio/fpurge.c",
"upstream-openbsd/lib/libc/stdio/fputs.c",
"upstream-openbsd/lib/libc/stdio/fputwc.c",
diff --git a/libc/NOTICE b/libc/NOTICE
index ae98d1ddd..90de7ef58 100644
--- a/libc/NOTICE
+++ b/libc/NOTICE
@@ -682,6 +682,31 @@ SUCH DAMAGE.
-------------------------------------------------------------------
+Copyright (C) 2013 Pietro Cerutti <gahr@FreeBSD.org>
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
+
+-------------------------------------------------------------------
+
Copyright (C) 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
@@ -5071,23 +5096,6 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-------------------------------------------------------------------
-Copyright (c) 2011 Martin Pieuchot <mpi@openbsd.org>
-Copyright (c) 2009 Ted Unangst
-
-Permission to use, copy, modify, and distribute this software for any
-purpose with or without fee is hereby granted, provided that the above
-copyright notice and this permission notice appear in all copies.
-
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
--------------------------------------------------------------------
-
Copyright (c) 2011 The Android Open Source Project
Copyright (c) 2008 ARM Ltd
All rights reserved.
diff --git a/libc/stdio/fmemopen.cpp b/libc/stdio/fmemopen.cpp
new file mode 100644
index 000000000..9d8c41f12
--- /dev/null
+++ b/libc/stdio/fmemopen.cpp
@@ -0,0 +1,156 @@
+/*-
+ * Copyright (C) 2013 Pietro Cerutti <gahr@FreeBSD.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "local.h"
+
+// See http://pubs.opengroup.org/onlinepubs/9699919799/functions/fmemopen.html
+// and http://man7.org/linux/man-pages/man3/fmemopen.3.html for documentation.
+
+struct fmemopen_cookie {
+ char* buf;
+ char* allocation;
+ size_t capacity;
+ size_t size;
+ size_t offset;
+ bool append;
+};
+
+static int fmemopen_read(void* cookie, char* buf, int n) {
+ fmemopen_cookie* ck = static_cast<fmemopen_cookie*>(cookie);
+
+ if (static_cast<size_t>(n) > ck->size - ck->offset) n = ck->size - ck->offset;
+
+ if (n > 0) {
+ memmove(buf, ck->buf + ck->offset, n);
+ ck->offset += n;
+ }
+ return n;
+}
+
+static int fmemopen_write(void* cookie, const char* buf, int n) {
+ fmemopen_cookie* ck = static_cast<fmemopen_cookie*>(cookie);
+
+ // We don't need to add the trailing NUL if there's already a trailing NUL
+ // in the data we're writing.
+ size_t space_for_null = (n > 0 && buf[n - 1] != '\0') ? 1 : 0;
+
+ // Undo any seeking/reading on an append-only stream.
+ if (ck->append) ck->offset = ck->size;
+
+ // How much can we actually fit?
+ if (static_cast<size_t>(n) + space_for_null > ck->capacity - ck->offset) {
+ n = ck->capacity - ck->offset - space_for_null;
+ // Give up if we don't even have room for one byte of userdata.
+ if (n <= 0) {
+ errno = ENOSPC;
+ return -1;
+ }
+ }
+
+ if (n > 0) {
+ memmove(ck->buf + ck->offset, buf, n);
+ ck->offset += n;
+ // Is this the furthest we've ever been?
+ if (ck->offset >= ck->size) {
+ if (buf[n - 1] != '\0') ck->buf[ck->offset] = '\0';
+ ck->size = ck->offset;
+ }
+ }
+ return n;
+}
+
+static fpos_t fmemopen_seek(void* cookie, fpos_t offset, int whence) {
+ fmemopen_cookie* ck = static_cast<fmemopen_cookie*>(cookie);
+
+ if (whence == SEEK_SET && (offset >= 0 && static_cast<size_t>(offset) <= ck->capacity)) {
+ return (ck->offset = offset);
+ } else if (whence == SEEK_CUR && (ck->offset + offset <= ck->capacity)) {
+ return (ck->offset += offset);
+ } else if (whence == SEEK_END && (offset <= 0 && static_cast<size_t>(-offset) <= ck->size)) {
+ return (ck->offset = ck->size + offset);
+ }
+ errno = EINVAL;
+ return -1;
+}
+
+static int fmemopen_close(void* cookie) {
+ fmemopen_cookie* ck = static_cast<fmemopen_cookie*>(cookie);
+ free(ck->allocation);
+ free(ck);
+ return 0;
+}
+
+FILE* fmemopen(void* buf, size_t capacity, const char* mode) {
+ int flags;
+ if (__sflags(mode, &flags) == 0) {
+ errno = EINVAL;
+ return nullptr;
+ }
+
+ fmemopen_cookie* ck = static_cast<fmemopen_cookie*>(calloc(sizeof(fmemopen_cookie), 1));
+ if (ck == nullptr) return nullptr;
+
+ ck->buf = static_cast<char*>(buf);
+ ck->capacity = capacity;
+
+ if (ck->buf == nullptr) ck->buf = ck->allocation = static_cast<char*>(calloc(capacity, 1));
+ if (ck->buf == nullptr) {
+ free(ck);
+ return nullptr;
+ }
+
+ FILE* fp = funopen(ck,
+ (flags & O_WRONLY) ? nullptr : fmemopen_read,
+ (flags & O_RDONLY) ? nullptr : fmemopen_write,
+ fmemopen_seek,
+ fmemopen_close);
+ if (fp == nullptr) {
+ fmemopen_close(ck);
+ return nullptr;
+ }
+
+ if (mode[0] == 'a') {
+ ck->size = strnlen(ck->buf, ck->capacity);
+ ck->offset = ck->size;
+ ck->append = true;
+ } else if (mode[0] == 'r') {
+ ck->size = capacity;
+ ck->offset = 0;
+ } else if (mode[0] == 'w') {
+ ck->size = 0;
+ ck->offset = 0;
+ ck->buf[0] = '\0';
+ }
+
+ return fp;
+}
diff --git a/libc/upstream-openbsd/lib/libc/stdio/fmemopen.c b/libc/upstream-openbsd/lib/libc/stdio/fmemopen.c
deleted file mode 100644
index 00c27646b..000000000
--- a/libc/upstream-openbsd/lib/libc/stdio/fmemopen.c
+++ /dev/null
@@ -1,184 +0,0 @@
-/* $OpenBSD: fmemopen.c,v 1.3 2015/08/31 02:53:57 guenther Exp $ */
-
-/*
- * Copyright (c) 2011 Martin Pieuchot <mpi@openbsd.org>
- * Copyright (c) 2009 Ted Unangst
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "local.h"
-
-struct state {
- char *string; /* actual stream */
- size_t pos; /* current position */
- size_t size; /* allocated size */
- size_t len; /* length of the data */
- int update; /* open for update */
-};
-
-static int
-fmemopen_read(void *v, char *b, int l)
-{
- struct state *st = v;
- int i;
-
- for (i = 0; i < l && i + st->pos < st->len; i++)
- b[i] = st->string[st->pos + i];
- st->pos += i;
-
- return (i);
-}
-
-static int
-fmemopen_write(void *v, const char *b, int l)
-{
- struct state *st = v;
- int i;
-
- for (i = 0; i < l && i + st->pos < st->size; i++)
- st->string[st->pos + i] = b[i];
- st->pos += i;
-
- if (st->pos >= st->len) {
- st->len = st->pos;
-
- if (st->len < st->size)
- st->string[st->len] = '\0';
- else if (!st->update)
- st->string[st->size - 1] = '\0';
- }
-
- return (i);
-}
-
-static fpos_t
-fmemopen_seek(void *v, fpos_t off, int whence)
-{
- struct state *st = v;
- ssize_t base = 0;
-
- switch (whence) {
- case SEEK_SET:
- break;
- case SEEK_CUR:
- base = st->pos;
- break;
- case SEEK_END:
- base = st->len;
- break;
- }
-
- if (off > st->size - base || off < -base) {
- errno = EOVERFLOW;
- return (-1);
- }
-
- st->pos = base + off;
-
- return (st->pos);
-}
-
-static int
-fmemopen_close(void *v)
-{
- free(v);
-
- return (0);
-}
-
-static int
-fmemopen_close_free(void *v)
-{
- struct state *st = v;
-
- free(st->string);
- free(st);
-
- return (0);
-}
-
-FILE *
-fmemopen(void *buf, size_t size, const char *mode)
-{
- struct state *st;
- FILE *fp;
- int flags, oflags;
-
- if (size == 0) {
- errno = EINVAL;
- return (NULL);
- }
-
- if ((flags = __sflags(mode, &oflags)) == 0) {
- errno = EINVAL;
- return (NULL);
- }
-
- if (buf == NULL && ((oflags & O_RDWR) == 0)) {
- errno = EINVAL;
- return (NULL);
- }
-
- if ((st = malloc(sizeof(*st))) == NULL)
- return (NULL);
-
- if ((fp = __sfp()) == NULL) {
- free(st);
- return (NULL);
- }
-
- st->pos = 0;
- st->len = (oflags & O_WRONLY) ? 0 : size;
- st->size = size;
- st->update = oflags & O_RDWR;
-
- if (buf == NULL) {
- if ((st->string = malloc(size)) == NULL) {
- free(st);
- fp->_flags = 0;
- return (NULL);
- }
- *st->string = '\0';
- } else {
- st->string = (char *)buf;
-
- if (oflags & O_TRUNC)
- *st->string = '\0';
-
- if (oflags & O_APPEND) {
- char *p;
-
- if ((p = memchr(st->string, '\0', size)) != NULL)
- st->pos = st->len = (p - st->string);
- else
- st->pos = st->len = size;
- }
- }
-
- fp->_flags = (short)flags;
- fp->_file = -1;
- fp->_cookie = (void *)st;
- fp->_read = (flags & __SWR) ? NULL : fmemopen_read;
- fp->_write = (flags & __SRD) ? NULL : fmemopen_write;
- fp->_seek = fmemopen_seek;
- fp->_close = (buf == NULL) ? fmemopen_close_free : fmemopen_close;
-
- return (fp);
-}
-DEF_WEAK(fmemopen);
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