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https://salsa.debian.org/ha-team/libqb
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2d2974e0e4
The instances of the former in a private static variable name, the latter in the comment to an internal-use-only function-like construct. Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
139 lines
4.0 KiB
C
139 lines
4.0 KiB
C
/*
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* Copyright (C) 2010 Red Hat, Inc.
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*
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* Author: Angus Salkeld <asalkeld@redhat.com>
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*
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* libqb is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* libqb 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libqb. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef QB_UTIL_INT_H_DEFINED
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#define QB_UTIL_INT_H_DEFINED
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#include "os_base.h"
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#include <qb/qblog.h>
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#if !defined (va_copy)
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#if defined (__va_copy)
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#define va_copy(_a, _b) __va_copy(_a, _b)
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#else
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#define va_copy(_a, _b) memcpy(&_a, &_b, sizeof(va_list))
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#endif /* !__va_copy */
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#endif /* !va_copy */
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/**
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* This is used internally by libqb.
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*
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* It sets the 32nd bit of the tags so that internal logs can be
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* distinguished from external ones.
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*/
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#ifndef S_SPLINT_S
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#define qb_util_log(priority, fmt, args...) qb_logt(priority, QB_LOG_TAG_LIBQB_MSG, fmt, ##args)
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#else
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#define qb_util_log
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#endif
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#ifndef S_SPLINT_S
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#define qb_util_perror(priority, fmt, args...) do { \
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char _perr_buf_[QB_LOG_STRERROR_MAX_LEN]; \
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const char *_perr_str_ = qb_strerror_r(errno, _perr_buf_, sizeof(_perr_buf_)); \
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qb_logt(priority, QB_LOG_TAG_LIBQB_MSG, fmt ": %s (%d)", ##args, _perr_str_, errno); \
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} while(0)
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#else
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#define qb_util_perror
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#endif
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/**
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* Create a file to be used to back shared memory.
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*
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* @param path (out) the final absolute path of the file.
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* @param file (in) the name of the file to be used.
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* @param bytes the size to truncate the file to.
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* @param file_flags same as passed into open()
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* @return 0 (success) or -errno
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*/
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int32_t qb_sys_mmap_file_open(char *path, const char *file, size_t bytes,
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uint32_t file_flags);
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/**
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* Create a shared mamory circular buffer.
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*
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* @param fd an open file to use to back the shared memory.
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* @param buf (out) the pointer to the start of the memory.
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* @param bytes the size of the shared memory.
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* @return 0 (success) or -errno
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*/
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int32_t qb_sys_circular_mmap(int32_t fd, void **buf, size_t bytes);
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/**
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* Set O_NONBLOCK and FD_CLOEXEC on a file descriptor.
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* @param fd the file descriptor.
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* @return 0 (success) or -errno
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*/
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int32_t qb_sys_fd_nonblock_cloexec_set(int32_t fd);
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/**
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* Try to unlink file, and possibly truncate it as a fallback.
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* @param path the file to be unlinked or truncated.
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* @param truncate_fallback whether to truncate the file when unlink fails.
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* @return 0 (success) or -errno
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*/
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int32_t qb_sys_unlink_or_truncate(const char *path, int32_t truncate_fallback);
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#if defined(HAVE_OPENAT) && defined(HAVE_UNLINKAT)
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/**
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* Try to unlinkat file, and possibly truncate it as a fallback ("at" variant).
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* @param path the file to be unlinked or truncated.
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* @param truncate_fallback whether to truncate the file when unlink fails.
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* @return 0 (success) or -errno
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*/
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int32_t qb_sys_unlink_or_truncate_at(int32_t dirfd, const char *path,
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int32_t truncate_fallback);
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#endif
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enum qb_sigpipe_ctl {
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QB_SIGPIPE_IGNORE,
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QB_SIGPIPE_DEFAULT,
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};
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/**
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* Control sigpipe (ignore/default) during send/recv
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* Needed on some bsd's
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*/
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void qb_sigpipe_ctl(enum qb_sigpipe_ctl ctl);
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/**
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* Control sigpipe on the socket.
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*/
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void qb_socket_nosigpipe(int32_t s);
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#define SERVER_BACKLOG 128
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#ifndef UNIX_PATH_MAX
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#define UNIX_PATH_MAX 108
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#endif /* UNIX_PATH_MAX */
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/*
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* SUN_LEN() does a strlen() on sun_path, but if you are trying to use the
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* "Linux abstract namespace" (you have to set sun_path[0] == '\0') then
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* the strlen() doesn't work.
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*/
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#if defined(SUN_LEN)
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#define QB_SUN_LEN(a) ((a)->sun_path[0] == '\0') ? sizeof(*(a)) : SUN_LEN(a)
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#else
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#define QB_SUN_LEN(a) sizeof(*(a))
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#endif
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#endif /* QB_UTIL_INT_H_DEFINED */
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