[PATCH 1/1] fork.2: child and parent run in separate memory spaces

[PATCH 1/1] fork.2: child and parent run in separate memory spaces

[Heinrich Schuchardt]

fork.2 should clearly point out that child and parent
process run in separate memory spaces.

Signed-off-by: Heinrich Schuchardt <xypron.glpk-Mmb7MZpHnFY@public.gmane.org>
---
 man2/fork.2 | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/man2/fork.2 b/man2/fork.2
index e6695ad..dce9bff 100644
--- a/man2/fork.2
+++ b/man2/fork.2
@@ -46,9 +46,25 @@ fork \- create a child process
 .SH DESCRIPTION
 .BR fork ()
 creates a new process by duplicating the calling process.
-The new process, referred to as the \fIchild\fP,
-is an exact duplicate of the calling process,
-referred to as the \fIparent\fP, except for the following points:
+The new process is referred to as the
+.I child
+process.
+The calling process is referred to as the
+.I parent
+process.
+
+The child process and the parent process run in separate memory spaces.
+At the time of
+.BR fork ()
+both memory spaces have the same content.
+Memory writes, file mappings
+.RB ( mmap (2)),
+and unmappings
+.RB ( munmap (2))
+performed by one of the processes do not affect the other.
+
+The child process is an exact duplicate of the parent
+process except for the following points:
 .IP * 3
 The child has its own unique process ID,
 and this PID does not match the ID of any existing process group
-- 
2.1.4

--
To unsubscribe from this list: send the line "unsubscribe linux-man" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: [PATCH 1/1] fork.2: child and parent run in separate memory spaces

[Michael Kerrisk (man-pages)]

On 02/16/2015 11:40 AM, Heinrich Schuchardt wrote:
> fork.2 should clearly point out that child and parent
> process run in separate memory spaces.

Thanks, Heinrich. Applied.

Cheers,

Michael


> Signed-off-by: Heinrich Schuchardt <xypron.glpk-Mmb7MZpHnFY@public.gmane.org>
> ---
>  man2/fork.2 | 22 +++++++++++++++++++---
>  1 file changed, 19 insertions(+), 3 deletions(-)
> 
> diff --git a/man2/fork.2 b/man2/fork.2
> index e6695ad..dce9bff 100644
> --- a/man2/fork.2
> +++ b/man2/fork.2
> @@ -46,9 +46,25 @@ fork \- create a child process
>  .SH DESCRIPTION
>  .BR fork ()
>  creates a new process by duplicating the calling process.
> -The new process, referred to as the \fIchild\fP,
> -is an exact duplicate of the calling process,
> -referred to as the \fIparent\fP, except for the following points:
> +The new process is referred to as the
> +.I child
> +process.
> +The calling process is referred to as the
> +.I parent
> +process.
> +
> +The child process and the parent process run in separate memory spaces.
> +At the time of
> +.BR fork ()
> +both memory spaces have the same content.
> +Memory writes, file mappings
> +.RB ( mmap (2)),
> +and unmappings
> +.RB ( munmap (2))
> +performed by one of the processes do not affect the other.
> +
> +The child process is an exact duplicate of the parent
> +process except for the following points:
>  .IP * 3
>  The child has its own unique process ID,
>  and this PID does not match the ID of any existing process group
> 


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
--
To unsubscribe from this list: send the line "unsubscribe linux-man" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html