8737d9e0c4
the allocated stack will be adjusted to the minimum supported stack size by the OS and rounded up to be a multiple of the system pagesize. Additionally an architecture dependent guard page is added to the stack to catch stack overflows. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
/*
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* posix specific declarations
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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* Copyright (c) 2010 Jes Sorensen <Jes.Sorensen@redhat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef QEMU_OS_POSIX_H
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#define QEMU_OS_POSIX_H
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#include <sys/mman.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <sys/un.h>
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void os_set_line_buffering(void);
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void os_set_proc_name(const char *s);
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void os_setup_signal_handling(void);
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void os_daemonize(void);
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void os_setup_post(void);
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int os_mlock(void);
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#define closesocket(s) close(s)
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#define ioctlsocket(s, r, v) ioctl(s, r, v)
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typedef struct timeval qemu_timeval;
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#define qemu_gettimeofday(tp) gettimeofday(tp, NULL)
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#ifndef CONFIG_UTIMENSAT
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#ifndef UTIME_NOW
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# define UTIME_NOW ((1l << 30) - 1l)
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#endif
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#ifndef UTIME_OMIT
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# define UTIME_OMIT ((1l << 30) - 2l)
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#endif
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#endif
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typedef struct timespec qemu_timespec;
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int qemu_utimens(const char *path, const qemu_timespec *times);
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bool is_daemonized(void);
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/**
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* qemu_alloc_stack:
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* @sz: pointer to a size_t holding the requested usable stack size
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*
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* Allocate memory that can be used as a stack, for instance for
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* coroutines. If the memory cannot be allocated, this function
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* will abort (like g_malloc()). This function also inserts an
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* additional guard page to catch a potential stack overflow.
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* Note that the memory required for the guard page and alignment
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* and minimal stack size restrictions will increase the value of sz.
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*
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* The allocated stack must be freed with qemu_free_stack().
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*
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* Returns: pointer to (the lowest address of) the stack memory.
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*/
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void *qemu_alloc_stack(size_t *sz);
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/**
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* qemu_free_stack:
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* @stack: stack to free
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* @sz: size of stack in bytes
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*
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* Free a stack allocated via qemu_alloc_stack(). Note that sz must
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* be exactly the adjusted stack size returned by qemu_alloc_stack.
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*/
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void qemu_free_stack(void *stack, size_t sz);
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#endif
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