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5a981ee823
Some operating systems (e.g. FreeBSD) do not implement mremap. In that case we can grow the mapping by trying to map adjacent memory. If that fails we can fall back to creating a new larger mapping and moving the old memory contents there. Co-authored-by: Koop Mast <kwm@rainbow-runner.nl> Signed-off-by: Alex Richardson <Alexander.Richardson@cl.cam.ac.uk>
76 lines
2 KiB
C
76 lines
2 KiB
C
/*
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* Copyright © 2012 Collabora, Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef WAYLAND_OS_H
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#define WAYLAND_OS_H
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#include <sys/types.h>
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#include <sys/socket.h>
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int
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wl_os_socket_cloexec(int domain, int type, int protocol);
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int
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wl_os_socket_peercred(int sockfd, uid_t *uid, gid_t *gid, pid_t *pid);
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int
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wl_os_dupfd_cloexec(int fd, int minfd);
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ssize_t
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wl_os_recvmsg_cloexec(int sockfd, struct msghdr *msg, int flags);
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int
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wl_os_epoll_create_cloexec(void);
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int
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wl_os_accept_cloexec(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
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void *
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wl_os_mremap_maymove(int fd, void *old_data, ssize_t *old_size,
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ssize_t new_size, int prot, int flags);
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/*
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* The following are for wayland-os.c and the unit tests.
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* Do not use them elsewhere.
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*/
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#ifdef __linux__
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#ifndef SOCK_CLOEXEC
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#define SOCK_CLOEXEC 02000000
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#endif
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#ifndef F_DUPFD_CLOEXEC
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#define F_DUPFD_CLOEXEC 1030
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#endif
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#ifndef MSG_CMSG_CLOEXEC
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#define MSG_CMSG_CLOEXEC 0x40000000
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#endif
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#endif /* __linux__ */
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#endif
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