diff options
Diffstat (limited to 'file_io/unix/copy.c')
| -rw-r--r-- | file_io/unix/copy.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/file_io/unix/copy.c b/file_io/unix/copy.c new file mode 100644 index 0000000..7f74d30 --- /dev/null +++ b/file_io/unix/copy.c @@ -0,0 +1,119 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "apr_arch_file_io.h" +#include "apr_file_io.h" + +static apr_status_t apr_file_transfer_contents(const char *from_path, + const char *to_path, + apr_int32_t flags, + apr_fileperms_t to_perms, + apr_pool_t *pool) +{ + apr_file_t *s, *d; + apr_status_t status; + apr_finfo_t finfo; + apr_fileperms_t perms; + + /* Open source file. */ + status = apr_file_open(&s, from_path, APR_FOPEN_READ, APR_OS_DEFAULT, pool); + if (status) + return status; + + /* Maybe get its permissions. */ + if (to_perms == APR_FILE_SOURCE_PERMS) { + status = apr_file_info_get(&finfo, APR_FINFO_PROT, s); + if (status != APR_SUCCESS && status != APR_INCOMPLETE) { + apr_file_close(s); /* toss any error */ + return status; + } + perms = finfo.protection; + apr_file_perms_set(to_path, perms); /* ignore any failure */ + } + else + perms = to_perms; + + /* Open dest file. */ + status = apr_file_open(&d, to_path, flags, perms, pool); + if (status) { + apr_file_close(s); /* toss any error */ + return status; + } + +#if BUFSIZ > APR_FILE_DEFAULT_BUFSIZE +#define COPY_BUFSIZ BUFSIZ +#else +#define COPY_BUFSIZ APR_FILE_DEFAULT_BUFSIZE +#endif + + /* Copy bytes till the cows come home. */ + while (1) { + char buf[COPY_BUFSIZ]; + apr_size_t bytes_this_time = sizeof(buf); + apr_status_t read_err; + apr_status_t write_err; + + /* Read 'em. */ + read_err = apr_file_read(s, buf, &bytes_this_time); + if (read_err && !APR_STATUS_IS_EOF(read_err)) { + apr_file_close(s); /* toss any error */ + apr_file_close(d); /* toss any error */ + return read_err; + } + + /* Write 'em. */ + write_err = apr_file_write_full(d, buf, bytes_this_time, NULL); + if (write_err) { + apr_file_close(s); /* toss any error */ + apr_file_close(d); /* toss any error */ + return write_err; + } + + if (read_err && APR_STATUS_IS_EOF(read_err)) { + status = apr_file_close(s); + if (status) { + apr_file_close(d); /* toss any error */ + return status; + } + + /* return the results of this close: an error, or success */ + return apr_file_close(d); + } + } + /* NOTREACHED */ +} + +APR_DECLARE(apr_status_t) apr_file_copy(const char *from_path, + const char *to_path, + apr_fileperms_t perms, + apr_pool_t *pool) +{ + return apr_file_transfer_contents(from_path, to_path, + (APR_FOPEN_WRITE | APR_FOPEN_CREATE | APR_FOPEN_TRUNCATE), + perms, + pool); +} + +APR_DECLARE(apr_status_t) apr_file_append(const char *from_path, + const char *to_path, + apr_fileperms_t perms, + apr_pool_t *pool) +{ + return apr_file_transfer_contents(from_path, to_path, + (APR_FOPEN_WRITE | APR_FOPEN_CREATE | APR_FOPEN_APPEND), + perms, + pool); +} |