include/qemu-common.h

   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)
  26 int qemu_main(int argc, char **argv, char **envp);
  27 #endif
  28
  29 void qemu_get_timedate(struct tm *tm, int offset);
  30 int qemu_timedate_diff(struct tm *tm);
  31
  32 void *qemu_oom_check(void *ptr);
  33
  34 ssize_t qemu_write_full(int fd, const void *buf, size_t count)
  35     QEMU_WARN_UNUSED_RESULT;
  36
  37 #ifndef _WIN32
  38 int qemu_pipe(int pipefd[2]);
  39 /* like openpty() but also makes it raw; return master fd */
  40 int 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
  62 void cpu_exec_init_all(void);
  63 void 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  */
  75 bool 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  */
  84 ssize_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  */
  94 ssize_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
 100 void qemu_progress_init(int enabled, float min_skip);
 101 void qemu_progress_end(void);
 102 void qemu_progress_print(float delta, int max);
 103 const char *qemu_get_vm_name(void);
 104
 105 #define QEMU_FILE_TYPE_BIOS   0
 106 #define QEMU_FILE_TYPE_KEYMAP 1
 107 char *qemu_find_file(int type, const char *name);
 108
 109 /* OS specific functions */
 110 void os_setup_early_signal_handling(void);
 111 char *os_find_datadir(void);
 112 int 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
 118 void qemu_hexdump(const char *buf, FILE *fp, const char *prefix, size_t size);
 119
 120 /*
 121  * helper to parse debug environment variables
 122  */
 123 int parse_debug_env(const char *name, int max, int initial);
 124
 125 const char *qemu_ether_ntoa(const MACAddr *mac);
 126 char *size_to_str(uint64_t val);
 127 void page_size_init(void);
 128
 129 /* returns non-zero if dump is in progress, otherwise zero is
 130  * returned. */
 131 bool dump_in_progress(void);
 132
 133 #endif