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Base: Document /proc/{pid}/children in proc(7) manpage

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MacDue 2022-06-22 12:46:54 +01:00 • committed by Linus Groh
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Base/usr/share/man/man7/proc.md
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@ -20,7 +20,7 @@ by a device file.
them. them.
* **`dmesg`** - this node exports information from the kernel log. * **`dmesg`** - this node exports information from the kernel log.
* **`interrupts`** - this node exports information on all IRQ handlers and basic statistics on * **`interrupts`** - this node exports information on all IRQ handlers and basic statistics on
them. them.
* **`kernel_base`** - this node reveals the loading address of the kernel. * **`kernel_base`** - this node reveals the loading address of the kernel.
* **`keymap`** - this node exports information on current used keymap. * **`keymap`** - this node exports information on current used keymap.
* **`memstat`** - this node exports statistics on memory allocation in the kernel. * **`memstat`** - this node exports statistics on memory allocation in the kernel.
@ -54,6 +54,7 @@ sanitizer errors.
* **`stacks`** - this directory lists all stack traces of process threads. * **`stacks`** - this directory lists all stack traces of process threads.
* **`unveil`** - this node exports information on all the unveil requests of a process. * **`unveil`** - this node exports information on all the unveil requests of a process.
* **`vm`** - this node exports information on virtual memory mappings of a process. * **`vm`** - this node exports information on virtual memory mappings of a process.
* **`children`** - this directory lists all the child processes of a process.
### Consistency and stability of data across multiple read operations ### Consistency and stability of data across multiple read operations
@ -61,7 +62,7 @@ When opening a data node, the kernel generates the required data so it's prepare
for read operation when requested to. However, in order to ensure that multiple reads for read operation when requested to. However, in order to ensure that multiple reads
will not create a corrupted data from that data node, a read operation alone will will not create a corrupted data from that data node, a read operation alone will
not inquire the kernel to refresh the data. not inquire the kernel to refresh the data.
To keep data output being refreshed, the userland has to re-open the data node with a To keep data output being refreshed, the userland has to re-open the data node with a
new file descriptor, or to perform the `lseek` syscall on the open file descriptor to new file descriptor, or to perform the `lseek` syscall on the open file descriptor to
reset the the offset to 0. reset the the offset to 0.