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6140be90ec
Add the four syscalls setxattrat(), getxattrat(), listxattrat() and
removexattrat(). Those can be used to operate on extended attributes,
especially security related ones, either relative to a pinned directory
or on a file descriptor without read access, avoiding a
/proc/<pid>/fd/<fd> detour, requiring a mounted procfs.
One use case will be setfiles(8) setting SELinux file contexts
("security.selinux") without race conditions and without a file
descriptor opened with read access requiring SELinux read permission.
Use the do_{name}at() pattern from fs/open.c.
Pass the value of the extended attribute, its length, and for
setxattrat(2) the command (XATTR_CREATE or XATTR_REPLACE) via an added
struct xattr_args to not exceed six syscall arguments and not
merging the AT_* and XATTR_* flags.
[AV: fixes by Christian Brauner folded in, the entire thing rebased on
top of {filename,file}_...xattr() primitives, treatment of empty
pathnames regularized. As the result, AT_EMPTY_PATH+NULL handling
is cheap, so f...(2) can use it]
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Link: https://lore.kernel.org/r/20240426162042.191916-1-cgoettsche@seltendoof.de
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
CC: x86@kernel.org
CC: linux-alpha@vger.kernel.org
CC: linux-kernel@vger.kernel.org
CC: linux-arm-kernel@lists.infradead.org
CC: linux-ia64@vger.kernel.org
CC: linux-m68k@lists.linux-m68k.org
CC: linux-mips@vger.kernel.org
CC: linux-parisc@vger.kernel.org
CC: linuxppc-dev@lists.ozlabs.org
CC: linux-s390@vger.kernel.org
CC: linux-sh@vger.kernel.org
CC: sparclinux@vger.kernel.org
CC: linux-fsdevel@vger.kernel.org
CC: audit@vger.kernel.org
CC: linux-arch@vger.kernel.org
CC: linux-api@vger.kernel.org
CC: linux-security-module@vger.kernel.org
CC: selinux@vger.kernel.org
[brauner: slight tweaks]
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
438 lines
15 KiB
Plaintext
438 lines
15 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
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#
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# 64-bit system call numbers and entry vectors
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#
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# The format is:
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# <number> <abi> <name> <entry point> [<compat entry point> [noreturn]]
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#
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# The __x64_sys_*() stubs are created on-the-fly for sys_*() system calls
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#
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# The abi is "common", "64" or "x32" for this file.
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#
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0 common read sys_read
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1 common write sys_write
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2 common open sys_open
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3 common close sys_close
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4 common stat sys_newstat
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5 common fstat sys_newfstat
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6 common lstat sys_newlstat
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7 common poll sys_poll
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8 common lseek sys_lseek
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9 common mmap sys_mmap
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10 common mprotect sys_mprotect
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11 common munmap sys_munmap
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12 common brk sys_brk
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13 64 rt_sigaction sys_rt_sigaction
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14 common rt_sigprocmask sys_rt_sigprocmask
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15 64 rt_sigreturn sys_rt_sigreturn
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16 64 ioctl sys_ioctl
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17 common pread64 sys_pread64
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18 common pwrite64 sys_pwrite64
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19 64 readv sys_readv
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20 64 writev sys_writev
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21 common access sys_access
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22 common pipe sys_pipe
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23 common select sys_select
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24 common sched_yield sys_sched_yield
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25 common mremap sys_mremap
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26 common msync sys_msync
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27 common mincore sys_mincore
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28 common madvise sys_madvise
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29 common shmget sys_shmget
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30 common shmat sys_shmat
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31 common shmctl sys_shmctl
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32 common dup sys_dup
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33 common dup2 sys_dup2
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34 common pause sys_pause
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35 common nanosleep sys_nanosleep
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36 common getitimer sys_getitimer
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37 common alarm sys_alarm
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38 common setitimer sys_setitimer
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39 common getpid sys_getpid
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40 common sendfile sys_sendfile64
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41 common socket sys_socket
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42 common connect sys_connect
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43 common accept sys_accept
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44 common sendto sys_sendto
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45 64 recvfrom sys_recvfrom
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46 64 sendmsg sys_sendmsg
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47 64 recvmsg sys_recvmsg
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48 common shutdown sys_shutdown
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49 common bind sys_bind
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50 common listen sys_listen
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51 common getsockname sys_getsockname
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52 common getpeername sys_getpeername
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53 common socketpair sys_socketpair
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54 64 setsockopt sys_setsockopt
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55 64 getsockopt sys_getsockopt
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56 common clone sys_clone
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57 common fork sys_fork
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58 common vfork sys_vfork
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59 64 execve sys_execve
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60 common exit sys_exit - noreturn
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61 common wait4 sys_wait4
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62 common kill sys_kill
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63 common uname sys_newuname
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64 common semget sys_semget
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65 common semop sys_semop
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66 common semctl sys_semctl
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67 common shmdt sys_shmdt
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68 common msgget sys_msgget
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69 common msgsnd sys_msgsnd
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70 common msgrcv sys_msgrcv
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71 common msgctl sys_msgctl
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72 common fcntl sys_fcntl
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73 common flock sys_flock
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74 common fsync sys_fsync
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75 common fdatasync sys_fdatasync
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76 common truncate sys_truncate
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77 common ftruncate sys_ftruncate
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78 common getdents sys_getdents
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79 common getcwd sys_getcwd
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80 common chdir sys_chdir
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81 common fchdir sys_fchdir
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82 common rename sys_rename
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83 common mkdir sys_mkdir
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84 common rmdir sys_rmdir
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85 common creat sys_creat
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86 common link sys_link
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87 common unlink sys_unlink
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88 common symlink sys_symlink
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89 common readlink sys_readlink
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90 common chmod sys_chmod
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91 common fchmod sys_fchmod
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92 common chown sys_chown
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93 common fchown sys_fchown
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94 common lchown sys_lchown
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95 common umask sys_umask
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96 common gettimeofday sys_gettimeofday
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97 common getrlimit sys_getrlimit
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98 common getrusage sys_getrusage
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99 common sysinfo sys_sysinfo
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100 common times sys_times
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101 64 ptrace sys_ptrace
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102 common getuid sys_getuid
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103 common syslog sys_syslog
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104 common getgid sys_getgid
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105 common setuid sys_setuid
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106 common setgid sys_setgid
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107 common geteuid sys_geteuid
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108 common getegid sys_getegid
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109 common setpgid sys_setpgid
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110 common getppid sys_getppid
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111 common getpgrp sys_getpgrp
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112 common setsid sys_setsid
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113 common setreuid sys_setreuid
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114 common setregid sys_setregid
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115 common getgroups sys_getgroups
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116 common setgroups sys_setgroups
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117 common setresuid sys_setresuid
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118 common getresuid sys_getresuid
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119 common setresgid sys_setresgid
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120 common getresgid sys_getresgid
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121 common getpgid sys_getpgid
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122 common setfsuid sys_setfsuid
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123 common setfsgid sys_setfsgid
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124 common getsid sys_getsid
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125 common capget sys_capget
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126 common capset sys_capset
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127 64 rt_sigpending sys_rt_sigpending
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128 64 rt_sigtimedwait sys_rt_sigtimedwait
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129 64 rt_sigqueueinfo sys_rt_sigqueueinfo
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130 common rt_sigsuspend sys_rt_sigsuspend
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131 64 sigaltstack sys_sigaltstack
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132 common utime sys_utime
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133 common mknod sys_mknod
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134 64 uselib
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135 common personality sys_personality
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136 common ustat sys_ustat
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137 common statfs sys_statfs
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138 common fstatfs sys_fstatfs
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139 common sysfs sys_sysfs
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140 common getpriority sys_getpriority
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141 common setpriority sys_setpriority
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142 common sched_setparam sys_sched_setparam
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143 common sched_getparam sys_sched_getparam
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144 common sched_setscheduler sys_sched_setscheduler
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145 common sched_getscheduler sys_sched_getscheduler
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146 common sched_get_priority_max sys_sched_get_priority_max
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147 common sched_get_priority_min sys_sched_get_priority_min
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148 common sched_rr_get_interval sys_sched_rr_get_interval
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149 common mlock sys_mlock
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150 common munlock sys_munlock
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151 common mlockall sys_mlockall
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152 common munlockall sys_munlockall
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153 common vhangup sys_vhangup
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154 common modify_ldt sys_modify_ldt
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155 common pivot_root sys_pivot_root
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156 64 _sysctl sys_ni_syscall
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157 common prctl sys_prctl
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158 common arch_prctl sys_arch_prctl
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159 common adjtimex sys_adjtimex
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160 common setrlimit sys_setrlimit
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161 common chroot sys_chroot
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162 common sync sys_sync
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163 common acct sys_acct
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164 common settimeofday sys_settimeofday
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165 common mount sys_mount
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166 common umount2 sys_umount
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167 common swapon sys_swapon
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168 common swapoff sys_swapoff
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169 common reboot sys_reboot
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170 common sethostname sys_sethostname
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171 common setdomainname sys_setdomainname
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172 common iopl sys_iopl
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173 common ioperm sys_ioperm
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174 64 create_module
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175 common init_module sys_init_module
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176 common delete_module sys_delete_module
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177 64 get_kernel_syms
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178 64 query_module
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179 common quotactl sys_quotactl
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180 64 nfsservctl
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181 common getpmsg
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182 common putpmsg
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183 common afs_syscall
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184 common tuxcall
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185 common security
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186 common gettid sys_gettid
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187 common readahead sys_readahead
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188 common setxattr sys_setxattr
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189 common lsetxattr sys_lsetxattr
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190 common fsetxattr sys_fsetxattr
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191 common getxattr sys_getxattr
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192 common lgetxattr sys_lgetxattr
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193 common fgetxattr sys_fgetxattr
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194 common listxattr sys_listxattr
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195 common llistxattr sys_llistxattr
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196 common flistxattr sys_flistxattr
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197 common removexattr sys_removexattr
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198 common lremovexattr sys_lremovexattr
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199 common fremovexattr sys_fremovexattr
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200 common tkill sys_tkill
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201 common time sys_time
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202 common futex sys_futex
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203 common sched_setaffinity sys_sched_setaffinity
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204 common sched_getaffinity sys_sched_getaffinity
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205 64 set_thread_area
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206 64 io_setup sys_io_setup
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207 common io_destroy sys_io_destroy
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208 common io_getevents sys_io_getevents
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209 64 io_submit sys_io_submit
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210 common io_cancel sys_io_cancel
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211 64 get_thread_area
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212 common lookup_dcookie
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213 common epoll_create sys_epoll_create
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214 64 epoll_ctl_old
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215 64 epoll_wait_old
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216 common remap_file_pages sys_remap_file_pages
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217 common getdents64 sys_getdents64
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218 common set_tid_address sys_set_tid_address
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219 common restart_syscall sys_restart_syscall
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220 common semtimedop sys_semtimedop
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221 common fadvise64 sys_fadvise64
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222 64 timer_create sys_timer_create
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223 common timer_settime sys_timer_settime
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224 common timer_gettime sys_timer_gettime
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225 common timer_getoverrun sys_timer_getoverrun
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226 common timer_delete sys_timer_delete
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227 common clock_settime sys_clock_settime
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228 common clock_gettime sys_clock_gettime
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229 common clock_getres sys_clock_getres
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230 common clock_nanosleep sys_clock_nanosleep
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231 common exit_group sys_exit_group - noreturn
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232 common epoll_wait sys_epoll_wait
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233 common epoll_ctl sys_epoll_ctl
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234 common tgkill sys_tgkill
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235 common utimes sys_utimes
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236 64 vserver
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237 common mbind sys_mbind
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238 common set_mempolicy sys_set_mempolicy
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239 common get_mempolicy sys_get_mempolicy
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240 common mq_open sys_mq_open
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241 common mq_unlink sys_mq_unlink
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242 common mq_timedsend sys_mq_timedsend
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243 common mq_timedreceive sys_mq_timedreceive
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244 64 mq_notify sys_mq_notify
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245 common mq_getsetattr sys_mq_getsetattr
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246 64 kexec_load sys_kexec_load
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247 64 waitid sys_waitid
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248 common add_key sys_add_key
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249 common request_key sys_request_key
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250 common keyctl sys_keyctl
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251 common ioprio_set sys_ioprio_set
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252 common ioprio_get sys_ioprio_get
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253 common inotify_init sys_inotify_init
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254 common inotify_add_watch sys_inotify_add_watch
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255 common inotify_rm_watch sys_inotify_rm_watch
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256 common migrate_pages sys_migrate_pages
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257 common openat sys_openat
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258 common mkdirat sys_mkdirat
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259 common mknodat sys_mknodat
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260 common fchownat sys_fchownat
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261 common futimesat sys_futimesat
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262 common newfstatat sys_newfstatat
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263 common unlinkat sys_unlinkat
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264 common renameat sys_renameat
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265 common linkat sys_linkat
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266 common symlinkat sys_symlinkat
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267 common readlinkat sys_readlinkat
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268 common fchmodat sys_fchmodat
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269 common faccessat sys_faccessat
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270 common pselect6 sys_pselect6
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271 common ppoll sys_ppoll
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272 common unshare sys_unshare
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273 64 set_robust_list sys_set_robust_list
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274 64 get_robust_list sys_get_robust_list
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275 common splice sys_splice
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276 common tee sys_tee
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277 common sync_file_range sys_sync_file_range
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278 64 vmsplice sys_vmsplice
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279 64 move_pages sys_move_pages
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280 common utimensat sys_utimensat
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281 common epoll_pwait sys_epoll_pwait
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282 common signalfd sys_signalfd
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283 common timerfd_create sys_timerfd_create
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284 common eventfd sys_eventfd
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285 common fallocate sys_fallocate
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286 common timerfd_settime sys_timerfd_settime
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287 common timerfd_gettime sys_timerfd_gettime
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288 common accept4 sys_accept4
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289 common signalfd4 sys_signalfd4
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290 common eventfd2 sys_eventfd2
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291 common epoll_create1 sys_epoll_create1
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292 common dup3 sys_dup3
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293 common pipe2 sys_pipe2
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294 common inotify_init1 sys_inotify_init1
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295 64 preadv sys_preadv
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296 64 pwritev sys_pwritev
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297 64 rt_tgsigqueueinfo sys_rt_tgsigqueueinfo
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298 common perf_event_open sys_perf_event_open
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299 64 recvmmsg sys_recvmmsg
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300 common fanotify_init sys_fanotify_init
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301 common fanotify_mark sys_fanotify_mark
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302 common prlimit64 sys_prlimit64
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303 common name_to_handle_at sys_name_to_handle_at
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304 common open_by_handle_at sys_open_by_handle_at
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305 common clock_adjtime sys_clock_adjtime
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306 common syncfs sys_syncfs
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307 64 sendmmsg sys_sendmmsg
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308 common setns sys_setns
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309 common getcpu sys_getcpu
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310 64 process_vm_readv sys_process_vm_readv
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311 64 process_vm_writev sys_process_vm_writev
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312 common kcmp sys_kcmp
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313 common finit_module sys_finit_module
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314 common sched_setattr sys_sched_setattr
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315 common sched_getattr sys_sched_getattr
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316 common renameat2 sys_renameat2
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317 common seccomp sys_seccomp
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318 common getrandom sys_getrandom
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319 common memfd_create sys_memfd_create
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320 common kexec_file_load sys_kexec_file_load
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321 common bpf sys_bpf
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322 64 execveat sys_execveat
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323 common userfaultfd sys_userfaultfd
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324 common membarrier sys_membarrier
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325 common mlock2 sys_mlock2
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326 common copy_file_range sys_copy_file_range
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327 64 preadv2 sys_preadv2
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328 64 pwritev2 sys_pwritev2
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329 common pkey_mprotect sys_pkey_mprotect
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330 common pkey_alloc sys_pkey_alloc
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331 common pkey_free sys_pkey_free
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332 common statx sys_statx
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333 common io_pgetevents sys_io_pgetevents
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334 common rseq sys_rseq
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335 common uretprobe sys_uretprobe
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# don't use numbers 387 through 423, add new calls after the last
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# 'common' entry
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424 common pidfd_send_signal sys_pidfd_send_signal
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425 common io_uring_setup sys_io_uring_setup
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426 common io_uring_enter sys_io_uring_enter
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427 common io_uring_register sys_io_uring_register
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428 common open_tree sys_open_tree
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429 common move_mount sys_move_mount
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430 common fsopen sys_fsopen
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431 common fsconfig sys_fsconfig
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432 common fsmount sys_fsmount
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433 common fspick sys_fspick
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434 common pidfd_open sys_pidfd_open
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435 common clone3 sys_clone3
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436 common close_range sys_close_range
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437 common openat2 sys_openat2
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438 common pidfd_getfd sys_pidfd_getfd
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439 common faccessat2 sys_faccessat2
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440 common process_madvise sys_process_madvise
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441 common epoll_pwait2 sys_epoll_pwait2
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442 common mount_setattr sys_mount_setattr
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443 common quotactl_fd sys_quotactl_fd
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444 common landlock_create_ruleset sys_landlock_create_ruleset
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445 common landlock_add_rule sys_landlock_add_rule
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446 common landlock_restrict_self sys_landlock_restrict_self
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447 common memfd_secret sys_memfd_secret
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448 common process_mrelease sys_process_mrelease
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449 common futex_waitv sys_futex_waitv
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450 common set_mempolicy_home_node sys_set_mempolicy_home_node
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451 common cachestat sys_cachestat
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452 common fchmodat2 sys_fchmodat2
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453 common map_shadow_stack sys_map_shadow_stack
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454 common futex_wake sys_futex_wake
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455 common futex_wait sys_futex_wait
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456 common futex_requeue sys_futex_requeue
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457 common statmount sys_statmount
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458 common listmount sys_listmount
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459 common lsm_get_self_attr sys_lsm_get_self_attr
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460 common lsm_set_self_attr sys_lsm_set_self_attr
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461 common lsm_list_modules sys_lsm_list_modules
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462 common mseal sys_mseal
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463 common setxattrat sys_setxattrat
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464 common getxattrat sys_getxattrat
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465 common listxattrat sys_listxattrat
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466 common removexattrat sys_removexattrat
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#
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# Due to a historical design error, certain syscalls are numbered differently
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# in x32 as compared to native x86_64. These syscalls have numbers 512-547.
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# Do not add new syscalls to this range. Numbers 548 and above are available
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# for non-x32 use.
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#
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512 x32 rt_sigaction compat_sys_rt_sigaction
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513 x32 rt_sigreturn compat_sys_x32_rt_sigreturn
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514 x32 ioctl compat_sys_ioctl
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515 x32 readv sys_readv
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516 x32 writev sys_writev
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517 x32 recvfrom compat_sys_recvfrom
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518 x32 sendmsg compat_sys_sendmsg
|
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519 x32 recvmsg compat_sys_recvmsg
|
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520 x32 execve compat_sys_execve
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|
521 x32 ptrace compat_sys_ptrace
|
|
522 x32 rt_sigpending compat_sys_rt_sigpending
|
|
523 x32 rt_sigtimedwait compat_sys_rt_sigtimedwait_time64
|
|
524 x32 rt_sigqueueinfo compat_sys_rt_sigqueueinfo
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|
525 x32 sigaltstack compat_sys_sigaltstack
|
|
526 x32 timer_create compat_sys_timer_create
|
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527 x32 mq_notify compat_sys_mq_notify
|
|
528 x32 kexec_load compat_sys_kexec_load
|
|
529 x32 waitid compat_sys_waitid
|
|
530 x32 set_robust_list compat_sys_set_robust_list
|
|
531 x32 get_robust_list compat_sys_get_robust_list
|
|
532 x32 vmsplice sys_vmsplice
|
|
533 x32 move_pages sys_move_pages
|
|
534 x32 preadv compat_sys_preadv64
|
|
535 x32 pwritev compat_sys_pwritev64
|
|
536 x32 rt_tgsigqueueinfo compat_sys_rt_tgsigqueueinfo
|
|
537 x32 recvmmsg compat_sys_recvmmsg_time64
|
|
538 x32 sendmmsg compat_sys_sendmmsg
|
|
539 x32 process_vm_readv sys_process_vm_readv
|
|
540 x32 process_vm_writev sys_process_vm_writev
|
|
541 x32 setsockopt sys_setsockopt
|
|
542 x32 getsockopt sys_getsockopt
|
|
543 x32 io_setup compat_sys_io_setup
|
|
544 x32 io_submit compat_sys_io_submit
|
|
545 x32 execveat compat_sys_execveat
|
|
546 x32 preadv2 compat_sys_preadv64v2
|
|
547 x32 pwritev2 compat_sys_pwritev64v2
|
|
# This is the end of the legacy x32 range. Numbers 548 and above are
|
|
# not special and are not to be used for x32-specific syscalls.
|