qemu/include/qemu-common.h
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   1/*
   2 * This file is supposed to be included only by .c files. No header file should
   3 * depend on qemu-common.h, as this would easily lead to circular header
   4 * dependencies.
   5 *
   6 * If a header file uses a definition from qemu-common.h, that definition
   7 * must be moved to a separate header file, and the header that uses it
   8 * must include that header.
   9 */
  10#ifndef QEMU_COMMON_H
  11#define QEMU_COMMON_H
  12
  13#define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
  14
  15/* Copyright string for -version arguments, About dialogs, etc */
  16#define QEMU_COPYRIGHT "Copyright (c) 2003-2019 " \
  17    "Fabrice Bellard and the QEMU Project developers"
  18
  19/* Bug reporting information for --help arguments, About dialogs, etc */
  20#define QEMU_HELP_BOTTOM \
  21    "See <https://qemu.org/contribute/report-a-bug> for how to report bugs.\n" \
  22    "More information on the QEMU project at <https://qemu.org>."
  23
  24/* main function, renamed */
  25#if defined(CONFIG_COCOA)
  26int qemu_main(int argc, char **argv, char **envp);
  27#endif
  28
  29void qemu_get_timedate(struct tm *tm, int offset);
  30int qemu_timedate_diff(struct tm *tm);
  31
  32void *qemu_oom_check(void *ptr);
  33
  34ssize_t qemu_write_full(int fd, const void *buf, size_t count)
  35    QEMU_WARN_UNUSED_RESULT;
  36
  37#ifndef _WIN32
  38int qemu_pipe(int pipefd[2]);
  39/* like openpty() but also makes it raw; return master fd */
  40int qemu_openpty_raw(int *aslave, char *pty_name);
  41#endif
  42
  43#ifdef _WIN32
  44/* MinGW needs type casts for the 'buf' and 'optval' arguments. */
  45#define qemu_getsockopt(sockfd, level, optname, optval, optlen) \
  46    getsockopt(sockfd, level, optname, (void *)optval, optlen)
  47#define qemu_setsockopt(sockfd, level, optname, optval, optlen) \
  48    setsockopt(sockfd, level, optname, (const void *)optval, optlen)
  49#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
  50#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
  51    sendto(sockfd, (const void *)buf, len, flags, destaddr, addrlen)
  52#else
  53#define qemu_getsockopt(sockfd, level, optname, optval, optlen) \
  54    getsockopt(sockfd, level, optname, optval, optlen)
  55#define qemu_setsockopt(sockfd, level, optname, optval, optlen) \
  56    setsockopt(sockfd, level, optname, optval, optlen)
  57#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags)
  58#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
  59    sendto(sockfd, buf, len, flags, destaddr, addrlen)
  60#endif
  61
  62void cpu_exec_init_all(void);
  63void cpu_exec_step_atomic(CPUState *cpu);
  64
  65/**
  66 * set_preferred_target_page_bits:
  67 * @bits: number of bits needed to represent an address within the page
  68 *
  69 * Set the preferred target page size (the actual target page
  70 * size may be smaller than any given CPU's preference).
  71 * Returns true on success, false on failure (which can only happen
  72 * if this is called after the system has already finalized its
  73 * choice of page size and the requested page size is smaller than that).
  74 */
  75bool set_preferred_target_page_bits(int bits);
  76
  77/**
  78 * Sends a (part of) iovec down a socket, yielding when the socket is full, or
  79 * Receives data into a (part of) iovec from a socket,
  80 * yielding when there is no data in the socket.
  81 * The same interface as qemu_sendv_recvv(), with added yielding.
  82 * XXX should mark these as coroutine_fn
  83 */
  84ssize_t qemu_co_sendv_recvv(int sockfd, struct iovec *iov, unsigned iov_cnt,
  85                            size_t offset, size_t bytes, bool do_send);
  86#define qemu_co_recvv(sockfd, iov, iov_cnt, offset, bytes) \
  87  qemu_co_sendv_recvv(sockfd, iov, iov_cnt, offset, bytes, false)
  88#define qemu_co_sendv(sockfd, iov, iov_cnt, offset, bytes) \
  89  qemu_co_sendv_recvv(sockfd, iov, iov_cnt, offset, bytes, true)
  90
  91/**
  92 * The same as above, but with just a single buffer
  93 */
  94ssize_t qemu_co_send_recv(int sockfd, void *buf, size_t bytes, bool do_send);
  95#define qemu_co_recv(sockfd, buf, bytes) \
  96  qemu_co_send_recv(sockfd, buf, bytes, false)
  97#define qemu_co_send(sockfd, buf, bytes) \
  98  qemu_co_send_recv(sockfd, buf, bytes, true)
  99
 100void qemu_progress_init(int enabled, float min_skip);
 101void qemu_progress_end(void);
 102void qemu_progress_print(float delta, int max);
 103const char *qemu_get_vm_name(void);
 104
 105#define QEMU_FILE_TYPE_BIOS   0
 106#define QEMU_FILE_TYPE_KEYMAP 1
 107char *qemu_find_file(int type, const char *name);
 108
 109/* OS specific functions */
 110void os_setup_early_signal_handling(void);
 111char *os_find_datadir(void);
 112int os_parse_cmd_args(int index, const char *optarg);
 113
 114/*
 115 * Hexdump a buffer to a file. An optional string prefix is added to every line
 116 */
 117
 118void qemu_hexdump(const char *buf, FILE *fp, const char *prefix, size_t size);
 119
 120/*
 121 * helper to parse debug environment variables
 122 */
 123int parse_debug_env(const char *name, int max, int initial);
 124
 125const char *qemu_ether_ntoa(const MACAddr *mac);
 126char *size_to_str(uint64_t val);
 127void page_size_init(void);
 128
 129/* returns non-zero if dump is in progress, otherwise zero is
 130 * returned. */
 131bool dump_in_progress(void);
 132
 133#endif
 134