mirror of https://github.com/mkerrisk/man-pages
Various improvements
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Michael Kerrisk
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@ -49,33 +49,33 @@ the system call appeared in kernel 2.0 or earlier.
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Where a system call is marked "2.2"
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this means the system call probably appeared in a 2.1.x kernel version,
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and first appeared in a stable kernel with 2.2.0.
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(No new system calls were added in the stable
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kernel 2.0.x series.
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The 2.2 kernel was created as a branch of kernel 2.0.21 via the 2.1.x
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unstable kernel series)
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(Development of the 2.2 kernel was initiated from a branch of kernel
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2.0.21 via the 2.1.x unstable kernel series.)
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.IP *
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Where a system call is marked "2.4"
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this means the system call probably appeared in a 2.3.x kernel version,
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and first appeared in a stable kernel with 2.4.0.
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(No new system calls were added in the stable
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kernel 2.2.x series.
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The 2.4 kernel was created as a branch of kernel 2.2.8 via the 2.3.x
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unstable kernel series.)
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(Development of the 2.4 kernel was initiated from a branch of
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kernel 2.2.8 via the 2.3.x unstable kernel series.)
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.IP *
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Where a system call is marked "2.6"
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this means the system call probably appeared in a 2.5.x kernel version,
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and first appeared in a stable kernel with 2.6.0.
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(Development of kernel 2.6 was initiated from a branch
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of kernel 2.4.15 via the 2.5.x unstable kernel series.)
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.IP *
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Starting with kernel 2.6.0, the development model changed,
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and new system calls may appear in each 2.6.x release.
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Kernel 2.6.0 was formed from a branch of kernel 2.4.15 via the 2.5.x
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unstable kernel series.
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In some cases, a system call appeared in 2.6.x and was also backported
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into a 2.4.x release after 2.4.15;
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where this is so, the version where the system call appeared
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In this case, the exact version number where the system call appeared
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is shown.
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.IP *
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In some cases, a system call was added to a stable kernel
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series after it branched from the previous stable kernel
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series, and then backported into the earlier stable kernel series.
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For example some system calls that appeared in 2.6.x were also backported
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into a 2.4.x release after 2.4.15.
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When this is so, the version where the system call appeared
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in both of the major kernel series is listed.
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(Where a system call is listed as appearing in kernel 2.4.x, x <= 15,
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then implicitly it also appeared in the later kernel 2.6.0.)
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.PP
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The list of system calls that are available as at kernel 2.6.22
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(or in a few cases only on older kernels) is as follows:
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@ -98,8 +98,7 @@ System call Kernel Notes
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\fBadjtimex\fP(2)
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\fBafs_syscall\fP(2)
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\fBalarm\fP(2)
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.\" alloc_hugepages (2) appeared in 2.5.36 and went away in 2.5.44
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.\" in 2.4.x, the syscall number exists but give ENOSYS
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\fBalloc_hugepages\fP(2) 2.5.36 Removed in 2.5.44
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\fBbdflush\fP(2)
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\fBbind\fP(2)
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\fBbreak\fP(2)
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@ -149,8 +148,7 @@ System call Kernel Notes
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\fBflistxattr\fP(2) 2.6; 2.4.18
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\fBflock\fP(2)
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\fBfork\fP(2)
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.\" free_hugepages (2) appeared in 2.5.36 and went away in 2.5.44
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.\" in 2.4.x, the syscall number exists but give ENOSYS
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\fBfree_hugepages\fP(2) 2.5.36 Removed in 2.5.44
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\fBfremovexattr\fP(2) 2.6; 2.4.18
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\fBfsetxattr\fP(2) 2.6; 2.4.18
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\fBfstat\fP(2)
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@ -205,7 +203,7 @@ System call Kernel Notes
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\fBgetuid\fP(2)
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\fBgetuid32\fP(2) 2.4
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\fBgetxattr\fP(2) 2.6; 2.4.18
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.\" \fBgetunwind\fP(2) ??? i164; DEPRECATE
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.\" \fBgetunwind\fP(2) ??? ia64; DEPRECATED
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\fBgtty\fP(2)
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\fBidle\fP(2)
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\fBinit_module\fP(2)
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@ -290,9 +288,9 @@ System call Kernel Notes
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\fBopen\fP(2)
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\fBopenat\fP(2) 2.6.16
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\fBpause\fP(2)
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.\" \fBpciconfig_iobase\fP(2) ??? Alpha, PowerPC, ARM
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.\" \fBpciconfig_read\fP(2) ??? Alpha, PowerPC, ARM
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.\" \fBpciconfig_write\fP(2) ??? Alpha, PowerPC, ARM
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\fBpciconfig_iobase\fP(2) 2.2.15; 2.4 Alpha, PowerPC, ARM; not i386
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\fBpciconfig_read\fP(2) 2.0.26; 2.2 Alpha, PowerPC, ARM; not i386
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\fBpciconfig_write\fP(2) 2.0.26; 2.2 Alpha, PowerPC, ARM; not i386
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\fBpersonality\fP(2)
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.\" \fBperfctr\fP(2) ??? Sparc32, Sparc64
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.\" \fBperfmonctl\fP(2) ??? IA-64
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@ -349,9 +347,7 @@ System call Kernel Notes
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\fBsched_setparam\fP(2)
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\fBsched_setscheduler\fP(2)
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\fBsched_yield\fP(2)
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.\" 2.4.11 added security(2), but this was dropped in 2.5.x
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.\" \fBsecurity\fP(2)
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.\" (2.4.11; not in 2.6)
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\fBsecurity\fP(2) 2.4.11
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\fBselect\fP(2)
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\fBsemctl\fP(2)
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\fBsemget\fP(2)
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@ -367,7 +363,7 @@ System call Kernel Notes
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\fBset_thread_area\fP(2) 2.6; 2.4.20
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\fBset_tid_address\fP(2) 2.6
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\fBset_zone_reclaim\fP(2) 2.6.13 Removed in 2.6.16
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.\" Yes, set_zone_reclaim() really was an implemented system call that
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.\" Yes, set_zone_reclaim(2) really was an implemented system call that
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.\" went away
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\fBsetdomainname\fP(2)
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\fBsetfsgid\fP(2)
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@ -416,8 +412,8 @@ System call Kernel Notes
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\fBsocketcall\fP(2) Implements BSD socket calls
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\fBsocketpair\fP(2)
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\fBsplice\fP(2) 2.6.17
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.\" \fBspu_create\fP(2) 2.6.16 PowerPC only
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.\" \fBspu_run\fP(2) 2.6.16 PowerPC only
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\fBspu_create\fP(2) 2.6.16 PowerPC only
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\fBspu_run\fP(2) 2.6.16 PowerPC only
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\fBssetmask\fP(2)
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\fBstat\fP(2)
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\fBstat64\fP(2) 2.4
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@ -449,7 +445,7 @@ System call Kernel Notes
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\fBtruncate\fP(2)
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\fBtruncate64\fP(2) 2.4
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\fBtuxcall\fP(2) Unimplemented; no slot on i386
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.\" As at 2.6.22, tuxcall has a slot on PowerPC, Xx86_64, and alpha
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.\" As at 2.6.22, tuxcall has a slot on PowerPC, x86_64, and alpha
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\fBugetrlimit\fP(2) 2.4
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\fBulimit\fP(2) Implemented in glibc;
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see \fBulimit\fP(3)
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@ -480,18 +476,6 @@ System call Kernel Notes
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.TE
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.PP
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Note the following points:
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.\" .IP * 3
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.\" These system calls are obsolete:
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.\" getrlimit,
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.\" .\" .\" oldfstat,
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.\" .\" .\" oldlstat,
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.\" .\" .\" oldolduname,
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.\" .\" .\" oldstat,
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.\" .\" .\" olduname,
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.\" .\" .\" readdir,
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.\" .\" .\" select,
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.\" .\" .\" and
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.\" .\" .\" vm86old
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.IP * 3
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Although slots are reserved for them in the system call table,
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the following system calls are not implemented in the standard kernel:
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@ -508,9 +492,9 @@ the following system calls are not implemented in the standard kernel:
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.BR prof (2), \" __NR_prof is 44 on Linux 2.6.22/i386
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.BR profil (2), \" __NR_profil is 98 on Linux 2.6.22/i386
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.BR putpmsg (2), \" __NR_putpmsg is 189 on Linux 2.6.22/i386
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.BR security (2),
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.\" __NR_putpmsg is 223 on Linux 2.4/i386; absent on 2.6/i386, present
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.\" on a a couple og 2.6 architectures
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.\" __NR_security is 223 on Linux 2.4/i386; absent on 2.6/i386, present
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.\" on a couple of 2.6 architectures
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.BR security (2), \" __NR_security is 223 on Linux 2.4/i386
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.BR stty (2), \" __NR_stty is 31 on Linux 2.6.22/i386
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.BR tuxcall (2), \" __NR_tuxcall is 184 on x86_64, also on PPC and alpha
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.BR ulimit (2), \" __NR_ulimit is 58 on Linux 2.6.22/i386
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@ -581,7 +565,7 @@ and
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(slot
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.IR __NR_stat64 ),
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with the last being the most current.
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.\" e.g., on 2.6.22/x86: __NR_oldstat 18, __NR_stat 106, __NR_stat64 195
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.\" e.g., on 2.6.22/i386: __NR_oldstat 18, __NR_stat 106, __NR_stat64 195
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.\" The stat system calls deal with three different data structures,
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.\" defined in include/asm-i386/stat.h: __old_kernel_stat, stat, stat64
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A similar story applies for
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