sh: add system call table generation support
The system call tables are in different format in all architecture and it will be difficult to manually add, modify or delete the syscall table entries in the res- pective files. To make it easy by keeping a script and which will generate the uapi header and syscall table file. This change will also help to unify the implemen- tation across all architectures. The system call table generation script is added in kernel/syscalls directory which contain the scripts to generate both uapi header file and system call table files. The syscall.tbl will be input for the scripts. syscall.tbl contains the list of available system calls along with system call number and corresponding entry point. Add a new system call in this architecture will be possible by adding new entry in the syscall.tbl file. Adding a new table entry consisting of: - System call number. - ABI. - System call name. - Entry point name. syscallhdr.sh and syscalltbl.sh will generate uapi header unistd_32.h and syscall_table.h files respectively. Both .sh files will parse the content syscall.tbl to generate the header and table files. unistd_32.h will be included by uapi/asm/unistd.h and syscall_table.h is included by kernel/syscall_32.S - the real system call table. Please note, this support is only available for 32-bit kernel, not 64-bit kernel. As I came across the 64-bit kernel is not active for long time. ARM, s390 and x86 architecuture does have similar support. I leverage their implementation to come up with a generic solution. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Firoz Khan
Arnd Bergmann
parent
8a79633b49
commit
a0239c8eb9
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@ -0,0 +1,38 @@
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# SPDX-License-Identifier: GPL-2.0
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kapi := arch/$(SRCARCH)/include/generated/asm
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uapi := arch/$(SRCARCH)/include/generated/uapi/asm
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_dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)') \
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$(shell [ -d '$(kapi)' ] || mkdir -p '$(kapi)')
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syscall := $(srctree)/$(src)/syscall.tbl
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syshdr := $(srctree)/$(src)/syscallhdr.sh
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systbl := $(srctree)/$(src)/syscalltbl.sh
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quiet_cmd_syshdr = SYSHDR $@
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cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@' \
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'$(syshdr_abis_$(basetarget))' \
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'$(syshdr_pfx_$(basetarget))' \
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'$(syshdr_offset_$(basetarget))'
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quiet_cmd_systbl = SYSTBL $@
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cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@' \
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'$(systbl_abis_$(basetarget))' \
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'$(systbl_abi_$(basetarget))' \
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'$(systbl_offset_$(basetarget))'
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$(uapi)/unistd_32.h: $(syscall) $(syshdr)
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$(call if_changed,syshdr)
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$(kapi)/syscall_table.h: $(syscall) $(systbl)
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$(call if_changed,systbl)
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uapisyshdr-y += unistd_32.h
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kapisyshdr-y += syscall_table.h
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targets += $(uapisyshdr-y) $(kapisyshdr-y)
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PHONY += all
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all: $(addprefix $(uapi)/,$(uapisyshdr-y))
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all: $(addprefix $(kapi)/,$(kapisyshdr-y))
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@:
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@ -0,0 +1,392 @@
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# SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
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#
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# system call numbers and entry vectors for sh
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#
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# The format is:
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# <number> <abi> <name> <entry point>
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#
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# The <abi> is always "common" for this file
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#
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0 common restart_syscall sys_restart_syscall
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1 common exit sys_exit
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2 common fork sys_fork
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3 common read sys_read
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4 common write sys_write
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5 common open sys_open
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6 common close sys_close
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7 common waitpid sys_waitpid
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8 common creat sys_creat
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9 common link sys_link
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10 common unlink sys_unlink
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11 common execve sys_execve
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12 common chdir sys_chdir
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13 common time sys_time
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14 common mknod sys_mknod
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15 common chmod sys_chmod
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16 common lchown sys_lchown16
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# 17 was break
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18 common oldstat sys_stat
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19 common lseek sys_lseek
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20 common getpid sys_getpid
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21 common mount sys_mount
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22 common umount sys_oldumount
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23 common setuid sys_setuid16
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24 common getuid sys_getuid16
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25 common stime sys_stime
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26 common ptrace sys_ptrace
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27 common alarm sys_alarm
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28 common oldfstat sys_fstat
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29 common pause sys_pause
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30 common utime sys_utime
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# 31 was stty
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# 32 was gtty
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33 common access sys_access
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34 common nice sys_nice
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# 35 was ftime
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36 common sync sys_sync
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37 common kill sys_kill
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38 common rename sys_rename
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39 common mkdir sys_mkdir
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40 common rmdir sys_rmdir
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41 common dup sys_dup
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42 common pipe sys_sh_pipe
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43 common times sys_times
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# 44 was prof
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45 common brk sys_brk
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46 common setgid sys_setgid16
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47 common getgid sys_getgid16
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48 common signal sys_signal
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49 common geteuid sys_geteuid16
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50 common getegid sys_getegid16
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51 common acct sys_acct
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52 common umount2 sys_umount
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# 53 was lock
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54 common ioctl sys_ioctl
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55 common fcntl sys_fcntl
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# 56 was mpx
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57 common setpgid sys_setpgid
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# 58 was ulimit
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# 59 was olduname
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60 common umask sys_umask
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61 common chroot sys_chroot
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62 common ustat sys_ustat
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63 common dup2 sys_dup2
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64 common getppid sys_getppid
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65 common getpgrp sys_getpgrp
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66 common setsid sys_setsid
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67 common sigaction sys_sigaction
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68 common sgetmask sys_sgetmask
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69 common ssetmask sys_ssetmask
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70 common setreuid sys_setreuid16
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71 common setregid sys_setregid16
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72 common sigsuspend sys_sigsuspend
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73 common sigpending sys_sigpending
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74 common sethostname sys_sethostname
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75 common setrlimit sys_setrlimit
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76 common getrlimit sys_old_getrlimit
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77 common getrusage sys_getrusage
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78 common gettimeofday sys_gettimeofday
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79 common settimeofday sys_settimeofday
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80 common getgroups sys_getgroups16
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81 common setgroups sys_setgroups16
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# 82 was select
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83 common symlink sys_symlink
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84 common oldlstat sys_lstat
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85 common readlink sys_readlink
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86 common uselib sys_uselib
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87 common swapon sys_swapon
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88 common reboot sys_reboot
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89 common readdir sys_old_readdir
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90 common mmap old_mmap
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91 common munmap sys_munmap
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92 common truncate sys_truncate
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93 common ftruncate sys_ftruncate
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94 common fchmod sys_fchmod
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95 common fchown sys_fchown16
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96 common getpriority sys_getpriority
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97 common setpriority sys_setpriority
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# 98 was profil
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99 common statfs sys_statfs
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100 common fstatfs sys_fstatfs
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# 101 was ioperm
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102 common socketcall sys_socketcall
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103 common syslog sys_syslog
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104 common setitimer sys_setitimer
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105 common getitimer sys_getitimer
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106 common stat sys_newstat
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107 common lstat sys_newlstat
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108 common fstat sys_newfstat
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109 common olduname sys_uname
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# 110 was iopl
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111 common vhangup sys_vhangup
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# 112 was idle
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# 113 was vm86old
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114 common wait4 sys_wait4
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115 common swapoff sys_swapoff
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116 common sysinfo sys_sysinfo
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117 common ipc sys_ipc
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118 common fsync sys_fsync
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119 common sigreturn sys_sigreturn
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120 common clone sys_clone
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121 common setdomainname sys_setdomainname
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122 common uname sys_newuname
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123 common cacheflush sys_cacheflush
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124 common adjtimex sys_adjtimex
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125 common mprotect sys_mprotect
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126 common sigprocmask sys_sigprocmask
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# 127 was create_module
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128 common init_module sys_init_module
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129 common delete_module sys_delete_module
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# 130 was get_kernel_syms
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131 common quotactl sys_quotactl
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132 common getpgid sys_getpgid
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133 common fchdir sys_fchdir
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134 common bdflush sys_bdflush
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135 common sysfs sys_sysfs
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136 common personality sys_personality
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# 137 was afs_syscall
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138 common setfsuid sys_setfsuid16
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139 common setfsgid sys_setfsgid16
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140 common _llseek sys_llseek
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141 common getdents sys_getdents
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142 common _newselect sys_select
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143 common flock sys_flock
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144 common msync sys_msync
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145 common readv sys_readv
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146 common writev sys_writev
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147 common getsid sys_getsid
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148 common fdatasync sys_fdatasync
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149 common _sysctl sys_sysctl
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150 common mlock sys_mlock
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151 common munlock sys_munlock
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152 common mlockall sys_mlockall
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153 common munlockall sys_munlockall
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154 common sched_setparam sys_sched_setparam
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155 common sched_getparam sys_sched_getparam
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156 common sched_setscheduler sys_sched_setscheduler
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157 common sched_getscheduler sys_sched_getscheduler
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158 common sched_yield sys_sched_yield
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159 common sched_get_priority_max sys_sched_get_priority_max
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160 common sched_get_priority_min sys_sched_get_priority_min
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161 common sched_rr_get_interval sys_sched_rr_get_interval
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162 common nanosleep sys_nanosleep
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163 common mremap sys_mremap
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164 common setresuid sys_setresuid16
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165 common getresuid sys_getresuid16
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# 166 was vm86
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# 167 was query_module
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168 common poll sys_poll
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169 common nfsservctl sys_ni_syscall
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170 common setresgid sys_setresgid16
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171 common getresgid sys_getresgid16
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172 common prctl sys_prctl
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173 common rt_sigreturn sys_rt_sigreturn
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174 common rt_sigaction sys_rt_sigaction
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175 common rt_sigprocmask sys_rt_sigprocmask
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176 common rt_sigpending sys_rt_sigpending
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177 common rt_sigtimedwait sys_rt_sigtimedwait
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178 common rt_sigqueueinfo sys_rt_sigqueueinfo
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179 common rt_sigsuspend sys_rt_sigsuspend
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180 common pread64 sys_pread_wrapper
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181 common pwrite64 sys_pwrite_wrapper
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182 common chown sys_chown16
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183 common getcwd sys_getcwd
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184 common capget sys_capget
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185 common capset sys_capset
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186 common sigaltstack sys_sigaltstack
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187 common sendfile sys_sendfile
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# 188 is reserved for getpmsg
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# 189 is reserved for putpmsg
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190 common vfork sys_vfork
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191 common ugetrlimit sys_getrlimit
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192 common mmap2 sys_mmap2
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193 common truncate64 sys_truncate64
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194 common ftruncate64 sys_ftruncate64
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195 common stat64 sys_stat64
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196 common lstat64 sys_lstat64
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197 common fstat64 sys_fstat64
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198 common lchown32 sys_lchown
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199 common getuid32 sys_getuid
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200 common getgid32 sys_getgid
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201 common geteuid32 sys_geteuid
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202 common getegid32 sys_getegid
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203 common setreuid32 sys_setreuid
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204 common setregid32 sys_setregid
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205 common getgroups32 sys_getgroups
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206 common setgroups32 sys_setgroups
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207 common fchown32 sys_fchown
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208 common setresuid32 sys_setresuid
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209 common getresuid32 sys_getresuid
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210 common setresgid32 sys_setresgid
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211 common getresgid32 sys_getresgid
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212 common chown32 sys_chown
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213 common setuid32 sys_setuid
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214 common setgid32 sys_setgid
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215 common setfsuid32 sys_setfsuid
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216 common setfsgid32 sys_setfsgid
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217 common pivot_root sys_pivot_root
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218 common mincore sys_mincore
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219 common madvise sys_madvise
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220 common getdents64 sys_getdents64
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221 common fcntl64 sys_fcntl64
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# 222 is reserved for tux
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# 223 is unused
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224 common gettid sys_gettid
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225 common readahead sys_readahead
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226 common setxattr sys_setxattr
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227 common lsetxattr sys_lsetxattr
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228 common fsetxattr sys_fsetxattr
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229 common getxattr sys_getxattr
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230 common lgetxattr sys_lgetxattr
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231 common fgetxattr sys_fgetxattr
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232 common listxattr sys_listxattr
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233 common llistxattr sys_llistxattr
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234 common flistxattr sys_flistxattr
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235 common removexattr sys_removexattr
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236 common lremovexattr sys_lremovexattr
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237 common fremovexattr sys_fremovexattr
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238 common tkill sys_tkill
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239 common sendfile64 sys_sendfile64
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240 common futex sys_futex
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241 common sched_setaffinity sys_sched_setaffinity
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242 common sched_getaffinity sys_sched_getaffinity
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# 243 is reserved for set_thread_area
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# 244 is reserved for get_thread_area
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245 common io_setup sys_io_setup
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246 common io_destroy sys_io_destroy
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247 common io_getevents sys_io_getevents
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248 common io_submit sys_io_submit
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249 common io_cancel sys_io_cancel
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250 common fadvise64 sys_fadvise64
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# 251 is unused
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252 common exit_group sys_exit_group
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253 common lookup_dcookie sys_lookup_dcookie
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254 common epoll_create sys_epoll_create
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255 common epoll_ctl sys_epoll_ctl
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256 common epoll_wait sys_epoll_wait
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257 common remap_file_pages sys_remap_file_pages
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258 common set_tid_address sys_set_tid_address
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259 common timer_create sys_timer_create
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260 common timer_settime sys_timer_settime
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261 common timer_gettime sys_timer_gettime
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262 common timer_getoverrun sys_timer_getoverrun
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263 common timer_delete sys_timer_delete
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264 common clock_settime sys_clock_settime
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265 common clock_gettime sys_clock_gettime
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266 common clock_getres sys_clock_getres
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267 common clock_nanosleep sys_clock_nanosleep
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268 common statfs64 sys_statfs64
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269 common fstatfs64 sys_fstatfs64
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270 common tgkill sys_tgkill
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271 common utimes sys_utimes
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272 common fadvise64_64 sys_fadvise64_64_wrapper
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# 273 is reserved for vserver
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274 common mbind sys_mbind
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275 common get_mempolicy sys_get_mempolicy
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276 common set_mempolicy sys_set_mempolicy
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277 common mq_open sys_mq_open
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278 common mq_unlink sys_mq_unlink
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279 common mq_timedsend sys_mq_timedsend
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280 common mq_timedreceive sys_mq_timedreceive
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281 common mq_notify sys_mq_notify
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282 common mq_getsetattr sys_mq_getsetattr
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283 common kexec_load sys_kexec_load
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284 common waitid sys_waitid
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285 common add_key sys_add_key
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286 common request_key sys_request_key
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287 common keyctl sys_keyctl
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288 common ioprio_set sys_ioprio_set
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289 common ioprio_get sys_ioprio_get
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290 common inotify_init sys_inotify_init
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291 common inotify_add_watch sys_inotify_add_watch
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292 common inotify_rm_watch sys_inotify_rm_watch
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# 293 is unused
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294 common migrate_pages sys_migrate_pages
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295 common openat sys_openat
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296 common mkdirat sys_mkdirat
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297 common mknodat sys_mknodat
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298 common fchownat sys_fchownat
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299 common futimesat sys_futimesat
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300 common fstatat64 sys_fstatat64
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301 common unlinkat sys_unlinkat
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302 common renameat sys_renameat
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303 common linkat sys_linkat
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304 common symlinkat sys_symlinkat
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305 common readlinkat sys_readlinkat
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306 common fchmodat sys_fchmodat
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307 common faccessat sys_faccessat
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308 common pselect6 sys_pselect6
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309 common ppoll sys_ppoll
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310 common unshare sys_unshare
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311 common set_robust_list sys_set_robust_list
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312 common get_robust_list sys_get_robust_list
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313 common splice sys_splice
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314 common sync_file_range sys_sync_file_range
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315 common tee sys_tee
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316 common vmsplice sys_vmsplice
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317 common move_pages sys_move_pages
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318 common getcpu sys_getcpu
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319 common epoll_pwait sys_epoll_pwait
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320 common utimensat sys_utimensat
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321 common signalfd sys_signalfd
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322 common timerfd_create sys_timerfd_create
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323 common eventfd sys_eventfd
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324 common fallocate sys_fallocate
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325 common timerfd_settime sys_timerfd_settime
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326 common timerfd_gettime sys_timerfd_gettime
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327 common signalfd4 sys_signalfd4
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328 common eventfd2 sys_eventfd2
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329 common epoll_create1 sys_epoll_create1
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330 common dup3 sys_dup3
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331 common pipe2 sys_pipe2
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332 common inotify_init1 sys_inotify_init1
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333 common preadv sys_preadv
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334 common pwritev sys_pwritev
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335 common rt_tgsigqueueinfo sys_rt_tgsigqueueinfo
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336 common perf_event_open sys_perf_event_open
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337 common fanotify_init sys_fanotify_init
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338 common fanotify_mark sys_fanotify_mark
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339 common prlimit64 sys_prlimit64
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340 common socket sys_socket
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341 common bind sys_bind
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342 common connect sys_connect
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343 common listen sys_listen
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344 common accept sys_accept
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345 common getsockname sys_getsockname
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346 common getpeername sys_getpeername
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347 common socketpair sys_socketpair
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348 common send sys_send
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349 common sendto sys_sendto
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350 common recv sys_recv
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351 common recvfrom sys_recvfrom
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352 common shutdown sys_shutdown
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353 common setsockopt sys_setsockopt
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354 common getsockopt sys_getsockopt
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355 common sendmsg sys_sendmsg
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356 common recvmsg sys_recvmsg
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357 common recvmmsg sys_recvmmsg
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358 common accept4 sys_accept4
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359 common name_to_handle_at sys_name_to_handle_at
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360 common open_by_handle_at sys_open_by_handle_at
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361 common clock_adjtime sys_clock_adjtime
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362 common syncfs sys_syncfs
|
||||
363 common sendmmsg sys_sendmmsg
|
||||
364 common setns sys_setns
|
||||
365 common process_vm_readv sys_process_vm_readv
|
||||
366 common process_vm_writev sys_process_vm_writev
|
||||
367 common kcmp sys_kcmp
|
||||
368 common finit_module sys_finit_module
|
||||
369 common sched_getattr sys_sched_getattr
|
||||
370 common sched_setattr sys_sched_setattr
|
||||
371 common renameat2 sys_renameat2
|
||||
372 common seccomp sys_seccomp
|
||||
373 common getrandom sys_getrandom
|
||||
374 common memfd_create sys_memfd_create
|
||||
375 common bpf sys_bpf
|
||||
376 common execveat sys_execveat
|
||||
377 common userfaultfd sys_userfaultfd
|
||||
378 common membarrier sys_membarrier
|
||||
379 common mlock2 sys_mlock2
|
||||
380 common copy_file_range sys_copy_file_range
|
||||
381 common preadv2 sys_preadv2
|
||||
382 common pwritev2 sys_pwritev2
|
||||
|
|
@ -0,0 +1,36 @@
|
|||
#!/bin/sh
|
||||
# SPDX-License-Identifier: GPL-2.0
|
||||
|
||||
in="$1"
|
||||
out="$2"
|
||||
my_abis=`echo "($3)" | tr ',' '|'`
|
||||
prefix="$4"
|
||||
offset="$5"
|
||||
|
||||
fileguard=_UAPI_ASM_SH_`basename "$out" | sed \
|
||||
-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
|
||||
-e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
|
||||
grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
|
||||
printf "#ifndef %s\n" "${fileguard}"
|
||||
printf "#define %s\n" "${fileguard}"
|
||||
printf "\n"
|
||||
|
||||
nxt=0
|
||||
while read nr abi name entry ; do
|
||||
if [ -z "$offset" ]; then
|
||||
printf "#define __NR_%s%s\t%s\n" \
|
||||
"${prefix}" "${name}" "${nr}"
|
||||
else
|
||||
printf "#define __NR_%s%s\t(%s + %s)\n" \
|
||||
"${prefix}" "${name}" "${offset}" "${nr}"
|
||||
fi
|
||||
nxt=$((nr+1))
|
||||
done
|
||||
|
||||
printf "\n"
|
||||
printf "#ifdef __KERNEL__\n"
|
||||
printf "#define __NR_syscalls\t%s\n" "${nxt}"
|
||||
printf "#endif\n"
|
||||
printf "\n"
|
||||
printf "#endif /* %s */" "${fileguard}"
|
||||
) > "$out"
|
||||
|
|
@ -0,0 +1,32 @@
|
|||
#!/bin/sh
|
||||
# SPDX-License-Identifier: GPL-2.0
|
||||
|
||||
in="$1"
|
||||
out="$2"
|
||||
my_abis=`echo "($3)" | tr ',' '|'`
|
||||
my_abi="$4"
|
||||
offset="$5"
|
||||
|
||||
emit() {
|
||||
t_nxt="$1"
|
||||
t_nr="$2"
|
||||
t_entry="$3"
|
||||
|
||||
while [ $t_nxt -lt $t_nr ]; do
|
||||
printf "__SYSCALL(%s, sys_ni_syscall, )\n" "${t_nxt}"
|
||||
t_nxt=$((t_nxt+1))
|
||||
done
|
||||
printf "__SYSCALL(%s, %s, )\n" "${t_nxt}" "${t_entry}"
|
||||
}
|
||||
|
||||
grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
|
||||
nxt=0
|
||||
if [ -z "$offset" ]; then
|
||||
offset=0
|
||||
fi
|
||||
|
||||
while read nr abi name entry ; do
|
||||
emit $((nxt+offset)) $((nr+offset)) $entry
|
||||
nxt=$((nr+1))
|
||||
done
|
||||
) > "$out"
|
||||
Loading…
Reference in New Issue