golangsystemcall
golang处理系统调用的包为syscall,具体系统调用时通过汇编来实现
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在类Unix系统中，使用以下4个方法进行系统调用(syscall_unix.go)。
(trapa1a2a3 ) (r1r2 err ) (trapa1a2a3a4a5a6 ) (r1r2 err ) (trapa1a2a3 ) (r1r2 err ) (trapa1a2a3a4a5a6 ) (r1r2 err )
trap 为系统调用号，a1~a6为寄存器参数，以X86为例，如下所示：
Linux系统调用号有300多个:（zsysnum_linux_amd64.go）
package syscall
const (
SYS_READ = 0
SYS_WRITE = 1
SYS_OPEN = 2
SYS_CLOSE = 3
SYS_STAT = 4
SYS_FSTAT = 5
SYS_LSTAT = 6
SYS_POLL = 7
SYS_LSEEK = 8
SYS_MMAP = 9
SYS_MPROTECT = 10
SYS_MUNMAP = 11
SYS_BRK = 12
SYS_RT_SIGACTION = 13
SYS_RT_SIGPROCMASK = 14
SYS_RT_SIGRETURN = 15
SYS_IOCTL = 16
SYS_PREAD64 = 17
SYS_PWRITE64 = 18
SYS_READV = 19
SYS_WRITEV = 20
SYS_ACCESS = 21
SYS_PIPE = 22
SYS_SELECT = 23
SYS_SCHED_YIELD = 24
SYS_MREMAP = 25
SYS_MSYNC = 26
SYS_MINCORE = 27
SYS_MADVISE = 28
SYS_SHMGET = 29
SYS_SHMAT = 30
SYS_SHMCTL = 31
SYS_DUP = 32
SYS_DUP2 = 33
SYS_PAUSE = 34
SYS_NANOSLEEP = 35
SYS_GETITIMER = 36
SYS_ALARM = 37
SYS_SETITIMER = 38
SYS_GETPID = 39
SYS_SENDFILE = 40
SYS_SOCKET = 41
SYS_CONNECT = 42
SYS_ACCEPT = 43
SYS_SENDTO = 44
SYS_RECVFROM = 45
SYS_SENDMSG = 46
SYS_RECVMSG = 47
SYS_SHUTDOWN = 48
SYS_BIND = 49
SYS_LISTEN = 50
SYS_GETSOCKNAME = 51
SYS_GETPEERNAME = 52
SYS_SOCKETPAIR = 53
SYS_SETSOCKOPT = 54
SYS_GETSOCKOPT = 55
SYS_CLONE = 56
SYS_FORK = 57
SYS_VFORK = 58
SYS_EXECVE = 59
SYS_EXIT = 60
SYS_WAIT4 = 61
SYS_KILL = 62
SYS_UNAME = 63
SYS_SEMGET = 64
SYS_SEMOP = 65
SYS_SEMCTL = 66
SYS_SHMDT = 67
SYS_MSGGET = 68
SYS_MSGSND = 69
SYS_MSGRCV = 70
SYS_MSGCTL = 71
SYS_FCNTL = 72
SYS_FLOCK = 73
SYS_FSYNC = 74
SYS_FDATASYNC = 75
SYS_TRUNCATE = 76
SYS_FTRUNCATE = 77
SYS_GETDENTS = 78
SYS_GETCWD = 79
SYS_CHDIR = 80
SYS_FCHDIR = 81
SYS_RENAME = 82
SYS_MKDIR = 83
SYS_RMDIR = 84
SYS_CREAT = 85
SYS_LINK = 86
SYS_UNLINK = 87
SYS_SYMLINK = 88
SYS_READLINK = 89
SYS_CHMOD = 90
SYS_FCHMOD = 91
SYS_CHOWN = 92
SYS_FCHOWN = 93
SYS_LCHOWN = 94
SYS_UMASK = 95
SYS_GETTIMEOFDAY = 96
SYS_GETRLIMIT = 97
SYS_GETRUSAGE = 98
SYS_SYSINFO = 99
SYS_TIMES = 100
SYS_PTRACE = 101
SYS_GETUID = 102
SYS_SYSLOG = 103
SYS_GETGID = 104
SYS_SETUID = 105
SYS_SETGID = 106
SYS_GETEUID = 107
SYS_GETEGID = 108
SYS_SETPGID = 109
SYS_GETPPID = 110
SYS_GETPGRP = 111
SYS_SETSID = 112
SYS_SETREUID = 113
SYS_SETREGID = 114
SYS_GETGROUPS = 115
SYS_SETGROUPS = 116
SYS_SETRESUID = 117
SYS_GETRESUID = 118
SYS_SETRESGID = 119
SYS_GETRESGID = 120
SYS_GETPGID = 121
SYS_SETFSUID = 122
SYS_SETFSGID = 123
SYS_GETSID = 124
SYS_CAPGET = 125
SYS_CAPSET = 126
SYS_RT_SIGPENDING = 127
SYS_RT_SIGTIMEDWAIT = 128
SYS_RT_SIGQUEUEINFO = 129
SYS_RT_SIGSUSPEND = 130
SYS_SIGALTSTACK = 131
SYS_UTIME = 132
SYS_MKNOD = 133
SYS_USELIB = 134
SYS_PERSONALITY = 135
SYS_USTAT = 136
SYS_STATFS = 137
SYS_FSTATFS = 138
SYS_SYSFS = 139
SYS_GETPRIORITY = 140
SYS_SETPRIORITY = 141
SYS_SCHED_SETPARAM = 142
SYS_SCHED_GETPARAM = 143
SYS_SCHED_SETSCHEDULER = 144
SYS_SCHED_GETSCHEDULER = 145
SYS_SCHED_GET_PRIORITY_MAX = 146
SYS_SCHED_GET_PRIORITY_MIN = 147
SYS_SCHED_RR_GET_INTERVAL = 148
SYS_MLOCK = 149
SYS_MUNLOCK = 150
SYS_MLOCKALL = 151
SYS_MUNLOCKALL = 152
SYS_VHANGUP = 153
SYS_MODIFY_LDT = 154
SYS_PIVOT_ROOT = 155
SYS__SYSCTL = 156
SYS_PRCTL = 157
SYS_ARCH_PRCTL = 158
SYS_ADJTIMEX = 159
SYS_SETRLIMIT = 160
SYS_CHROOT = 161
SYS_SYNC = 162
SYS_ACCT = 163
SYS_SETTIMEOFDAY = 164
SYS_MOUNT = 165
SYS_UMOUNT2 = 166
SYS_SWAPON = 167
SYS_SWAPOFF = 168
SYS_REBOOT = 169
SYS_SETHOSTNAME = 170
SYS_SETDOMAINNAME = 171
SYS_IOPL = 172
SYS_IOPERM = 173
SYS_CREATE_MODULE = 174
SYS_INIT_MODULE = 175
SYS_DELETE_MODULE = 176
SYS_GET_KERNEL_SYMS = 177
SYS_QUERY_MODULE = 178
SYS_QUOTACTL = 179
SYS_NFSSERVCTL = 180
SYS_GETPMSG = 181
SYS_PUTPMSG = 182
SYS_AFS_SYSCALL = 183
SYS_TUXCALL = 184
SYS_SECURITY = 185
SYS_GETTID = 186
SYS_READAHEAD = 187
SYS_SETXATTR = 188
SYS_LSETXATTR = 189
SYS_FSETXATTR = 190
SYS_GETXATTR = 191
SYS_LGETXATTR = 192
SYS_FGETXATTR = 193
SYS_LISTXATTR = 194
SYS_LLISTXATTR = 195
SYS_FLISTXATTR = 196
SYS_REMOVEXATTR = 197
SYS_LREMOVEXATTR = 198
SYS_FREMOVEXATTR = 199
SYS_TKILL = 200
SYS_TIME = 201
SYS_FUTEX = 202
SYS_SCHED_SETAFFINITY = 203
SYS_SCHED_GETAFFINITY = 204
SYS_SET_THREAD_AREA = 205
SYS_IO_SETUP = 206
SYS_IO_DESTROY = 207
SYS_IO_GETEVENTS = 208
SYS_IO_SUBMIT = 209
SYS_IO_CANCEL = 210
SYS_GET_THREAD_AREA = 211
SYS_LOOKUP_DCOOKIE = 212
SYS_EPOLL_CREATE = 213
SYS_EPOLL_CTL_OLD = 214
SYS_EPOLL_WAIT_OLD = 215
SYS_REMAP_FILE_PAGES = 216
SYS_GETDENTS64 = 217
SYS_SET_TID_ADDRESS = 218
SYS_RESTART_SYSCALL = 219
SYS_SEMTIMEDOP = 220
SYS_FADVISE64 = 221
SYS_TIMER_CREATE = 222
SYS_TIMER_SETTIME = 223
SYS_TIMER_GETTIME = 224
SYS_TIMER_GETOVERRUN = 225
SYS_TIMER_DELETE = 226
SYS_CLOCK_SETTIME = 227
SYS_CLOCK_GETTIME = 228
SYS_CLOCK_GETRES = 229
SYS_CLOCK_NANOSLEEP = 230
SYS_EXIT_GROUP = 231
SYS_EPOLL_WAIT = 232
SYS_EPOLL_CTL = 233
SYS_TGKILL = 234
SYS_UTIMES = 235
SYS_VSERVER = 236
SYS_MBIND = 237
SYS_SET_MEMPOLICY = 238
SYS_GET_MEMPOLICY = 239
SYS_MQ_OPEN = 240
SYS_MQ_UNLINK = 241
SYS_MQ_TIMEDSEND = 242
SYS_MQ_TIMEDRECEIVE = 243
SYS_MQ_NOTIFY = 244
SYS_MQ_GETSETATTR = 245
SYS_KEXEC_LOAD = 246
SYS_WAITID = 247
SYS_ADD_KEY = 248
SYS_REQUEST_KEY = 249
SYS_KEYCTL = 250
SYS_IOPRIO_SET = 251
SYS_IOPRIO_GET = 252
SYS_INOTIFY_INIT = 253
SYS_INOTIFY_ADD_WATCH = 254
SYS_INOTIFY_RM_WATCH = 255
SYS_MIGRATE_PAGES = 256
SYS_OPENAT = 257
SYS_MKDIRAT = 258
SYS_MKNODAT = 259
SYS_FCHOWNAT = 260
SYS_FUTIMESAT = 261
SYS_NEWFSTATAT = 262
SYS_UNLINKAT = 263
SYS_RENAMEAT = 264
SYS_LINKAT = 265
SYS_SYMLINKAT = 266
SYS_READLINKAT = 267
SYS_FCHMODAT = 268
SYS_FACCESSAT = 269
SYS_PSELECT6 = 270
SYS_PPOLL = 271
SYS_UNSHARE = 272
SYS_SET_ROBUST_LIST = 273
SYS_GET_ROBUST_LIST = 274
SYS_SPLICE = 275
SYS_TEE = 276
SYS_SYNC_FILE_RANGE = 277
SYS_VMSPLICE = 278
SYS_MOVE_PAGES = 279
SYS_UTIMENSAT = 280
SYS_EPOLL_PWAIT = 281
SYS_SIGNALFD = 282
SYS_TIMERFD_CREATE = 283
SYS_EVENTFD = 284
SYS_FALLOCATE = 285
SYS_TIMERFD_SETTIME = 286
SYS_TIMERFD_GETTIME = 287
SYS_ACCEPT4 = 288
SYS_SIGNALFD4 = 289
SYS_EVENTFD2 = 290
SYS_EPOLL_CREATE1 = 291
SYS_DUP3 = 292
SYS_PIPE2 = 293
SYS_INOTIFY_INIT1 = 294
SYS_PREADV = 295
SYS_PWRITEV = 296
SYS_RT_TGSIGQUEUEINFO = 297
SYS_PERF_EVENT_OPEN = 298
SYS_RECVMMSG = 299
SYS_FANOTIFY_INIT = 300
SYS_FANOTIFY_MARK = 301
SYS_PRLIMIT64 = 302
)
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