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c7041b0faf
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13520 Signed-off-by: Amitay Isaacs <amitay@gmail.com> Reviewed-by: Martin Schwenke <martin@meltin.net>
63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
/*
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Line based I/O over fds
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Copyright (C) Amitay Isaacs 2018
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __CTDB_LINE_H__
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#define __CTDB_LINE_H__
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#include <talloc.h>
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/**
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* @file line.h
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*
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* @brief Line based I/O over pipes and sockets
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*/
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/**
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* @brief The callback routine called to process a line
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*
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* @param[in] line The line read
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* @param[in] private_data Private data for callback
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* @return 0 to continue processing lines, non-zero to stop reading
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*/
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typedef int (*line_process_fn_t)(char *line, void *private_data);
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/**
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* @brief Read a line (terminated by \n or \0)
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*
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* If there is any read error on fd, then errno will be returned.
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* If callback function returns a non-zero value, then that value will be
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* returned.
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*
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* @param[in] fd The file descriptor
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* @param[in] length The expected length of a line (this is only a hint)
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* @param[in] mem_ctx Talloc memory context
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* @param[in] callback Callback function called when a line is read
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* @param[in] private_data Private data for callback
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* @param[out] num_lines Number of lines read so far
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* @return 0 on on success, errno on failure
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*/
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int line_read(int fd,
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size_t length,
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TALLOC_CTX *mem_ctx,
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line_process_fn_t callback,
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void *private_data,
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int *num_lines);
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#endif /* __CTDB_LINE_H__ */
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