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Diffstat (limited to 'lib/dpkg/buffer.h')
| -rw-r--r-- | lib/dpkg/buffer.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/lib/dpkg/buffer.h b/lib/dpkg/buffer.h new file mode 100644 index 0000000..e297660 --- /dev/null +++ b/lib/dpkg/buffer.h @@ -0,0 +1,104 @@ +/* + * libdpkg - Debian packaging suite library routines + * buffer.h - buffer I/O handling routines + * + * Copyright © 1999, 2000 Wichert Akkerman <wakkerma@debian.org> + * Copyright © 2000-2003 Adam Heath <doogie@debian.org> + * Copyright © 2005 Scott James Remnant + * Copyright © 2008-2011 Guillem Jover <guillem@debian.org> + * + * This is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#ifndef LIBDPKG_BUFFER_H +#define LIBDPKG_BUFFER_H + +#include <sys/types.h> + +#include <dpkg/macros.h> +#include <dpkg/error.h> + +DPKG_BEGIN_DECLS + +/** + * @defgroup buffer Buffer I/O + * @ingroup dpkg-internal + * @{ + */ + +#define DPKG_BUFFER_SIZE (32 * 1024) + +#define BUFFER_WRITE_VBUF 1 +#define BUFFER_WRITE_FD 2 +#define BUFFER_WRITE_NULL 3 + +#define BUFFER_DIGEST_NULL 4 +#define BUFFER_DIGEST_MD5 5 + +#define BUFFER_READ_FD 0 + +struct buffer_data { + union { + void *ptr; + int i; + } arg; + int type; +}; + +# define buffer_md5(buf, hash, limit) \ + buffer_digest(buf, hash, BUFFER_DIGEST_MD5, limit) + +# define fd_md5(fd, hash, limit, err) \ + buffer_copy_IntPtr(fd, BUFFER_READ_FD, \ + hash, BUFFER_DIGEST_MD5, \ + NULL, BUFFER_WRITE_NULL, \ + limit, err) +# define fd_fd_copy(fd1, fd2, limit, err) \ + buffer_copy_IntInt(fd1, BUFFER_READ_FD, \ + NULL, BUFFER_DIGEST_NULL, \ + fd2, BUFFER_WRITE_FD, \ + limit, err) +# define fd_fd_copy_and_md5(fd1, fd2, hash, limit, err) \ + buffer_copy_IntInt(fd1, BUFFER_READ_FD, \ + hash, BUFFER_DIGEST_MD5, \ + fd2, BUFFER_WRITE_FD, \ + limit, err) +# define fd_vbuf_copy(fd, buf, limit, err) \ + buffer_copy_IntPtr(fd, BUFFER_READ_FD, \ + NULL, BUFFER_DIGEST_NULL, \ + buf, BUFFER_WRITE_VBUF, \ + limit, err) +# define fd_skip(fd, limit, err) \ + buffer_skip_Int(fd, BUFFER_READ_FD, limit, err) + + +off_t buffer_copy_IntPtr(int i, int typeIn, + void *f, int typeDigest, + void *p, int typeOut, + off_t limit, struct dpkg_error *err) + DPKG_ATTR_REQRET; +off_t buffer_copy_IntInt(int i1, int typeIn, + void *f, int typeDigest, + int i2, int typeOut, + off_t limit, struct dpkg_error *err) + DPKG_ATTR_REQRET; +off_t buffer_skip_Int(int I, int T, off_t limit, struct dpkg_error *err) + DPKG_ATTR_REQRET; +off_t buffer_digest(const void *buf, void *hash, int typeDigest, off_t length); + +/** @} */ + +DPKG_END_DECLS + +#endif /* LIBDPKG_BUFFER_H */ |