mirror of
https://github.com/ibm-s390-linux/s390-tools.git
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b627b8d8e1
This commit is based on the s390-tools-1.39.0 version. Changes on top of s390-tools-1.39.0: - Add MIT license to all source files - Add LICENSE file - Transform REAMDE to README.md (markdown) - Add AUTHORS.md file - Add CONTRIBUTING.md file - Move changelog from README to CHANGELOG.md file Reviewed-by: Stefan Haberland <sth@linux.vnet.ibm.com> Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
/*
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* dump2tar - tool to dump files and command output into a tar archive
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*
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* Data buffering functions
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*
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* Copyright IBM Corp. 2016, 2017
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef BUFFER_H
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#define BUFFER_H
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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/* Buffers for building tar file entries */
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struct buffer {
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size_t total; /* Total number of bytes in buffer */
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size_t off; /* Current offset to next free byte in memory buffer */
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size_t size; /* Memory buffer size */
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char *addr; /* Memory buffer address */
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bool fd_open; /* Has fd been openend yet? */
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FILE *file; /* FILE * of file containing previous buffer data */
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int fd; /* Handle of file containing previous buffer data */
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};
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void buffer_init(struct buffer *buffer, size_t size);
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struct buffer *buffer_alloc(size_t size);
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void buffer_reset(struct buffer *buffer);
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void buffer_close(struct buffer *buffer);
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void buffer_free(struct buffer *buffer, bool dyn);
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int buffer_open(struct buffer *buffer);
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int buffer_flush(struct buffer *buffer);
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ssize_t buffer_make_room(struct buffer *buffer, size_t size, bool usefile,
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size_t max_buffer_size);
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int buffer_truncate(struct buffer *buffer, size_t len);
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ssize_t buffer_read_fd(struct buffer *buffer, int fd, size_t chunk,
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bool usefile, size_t max_buffer_size);
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int buffer_add_data(struct buffer *buffer, char *addr, size_t len,
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bool usefile, size_t max_buffer_size);
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typedef int (*buffer_cb_t)(void *data, void *addr, size_t len);
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int buffer_iterate(struct buffer *buffer, buffer_cb_t cb, void *data);
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void buffer_print(struct buffer *buffer);
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#endif /* BUFFER_H */
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