mirror of https://github.com/mkerrisk/man-pages
clone.2: Add information about clone and clone2 on IA-64
Note that clone() definition on IA-64 is the same as on SH/Tile/Alpha, align __clone2 declarations in line with the previous ones, add clone2 syscall prototype. Signed-off-by: Eugene Syromyatnikov <evgsyr@gmail.com> Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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man2/clone.2
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man2/clone.2
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@ -867,7 +867,7 @@ and there are variations in the arguments across architectures,
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as detailed in the following paragraphs.
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.PP
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The raw system call interface on x86-64 and some other architectures
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(including sh, tile, and alpha) is:
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(including sh, tile, ia-64, and alpha) is:
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.PP
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.in +4
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.EX
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@ -926,24 +926,29 @@ For details, see the kernel (and glibc) source.
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.SS ia64
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On ia64, a different interface is used:
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.PP
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.nf
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.in +4
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.EX
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.BI "int __clone2(int (*" "fn" ")(void *), "
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.BI " void *" child_stack_base ", size_t " stack_size ,
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.BI " int " flags ", void *" "arg" ", ... "
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.BI " /* pid_t *" ptid ", struct user_desc *" tls \
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", pid_t *" ctid " */ );"
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.fi
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.EE
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.in
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.PP
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The prototype shown above is for the glibc wrapper function;
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the raw system call interface has no
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.I fn
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or
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.I arg
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argument, and changes the order of the arguments so that
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.I flags
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is the first argument, and
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.I tls
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is the last argument.
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The prototype shown above is for the glibc wrapper function; for the syscall
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itself, prototype can be described as follows (it is identical to the
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.BR clone ()
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prototype on microblaze):
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.PP
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.in +4
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.EX
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.BI "long clone2(unsigned long " flags ", void *" child_stack_base ,
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.BI " int " stack_size , "\fR /* Size of stack */"
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.BI " int *" ptid ", int *" ctid ,
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.BI " unsigned long " tls );
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.EE
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.in
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.PP
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.BR __clone2 ()
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operates in the same way as
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