mirror of https://github.com/mkerrisk/man-pages
proc.5, pipe.7: Move /proc/sys/fs/pipe-max-size content from proc(5) to pipe(7)
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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14
man5/proc.5
14
man5/proc.5
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@ -4028,18 +4028,8 @@ with writes enabled, any UID or GID that would exceed 65535 is translated
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to the overflow value before being written to disk.
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to the overflow value before being written to disk.
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.TP
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.TP
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.IR /proc/sys/fs/pipe-max-size " (since Linux 2.6.35)"
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.IR /proc/sys/fs/pipe-max-size " (since Linux 2.6.35)"
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The value in this file defines an upper limit for raising the capacity
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See
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of a pipe using the
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.BR pipe (7).
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.BR fcntl (2)
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.B F_SETPIPE_SZ
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operation.
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This limit applies only to unprivileged processes.
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The default value for this file is 1,048,576.
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The value assigned to this file may be rounded upward,
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to reflect the value actually employed for a convenient implementation.
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To determine the rounded-up value,
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display the contents of this file after assigning a value to it.
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The minimum value that can be assigned to this file is the system page size.
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.TP
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.TP
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.IR /proc/sys/fs/protected_hardlinks " (since Linux 3.6)"
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.IR /proc/sys/fs/protected_hardlinks " (since Linux 3.6)"
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.\" commit 800179c9b8a1e796e441674776d11cd4c05d61d7
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.\" commit 800179c9b8a1e796e441674776d11cd4c05d61d7
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@ -184,7 +184,13 @@ The maximum size (in bytes) of individual pipes that can be set
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by users without the
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by users without the
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.B CAP_SYS_RESOURCE
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.B CAP_SYS_RESOURCE
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capability.
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capability.
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The value assigned to this file may be rounded upward,
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to reflect the value actually employed for a convenient implementation.
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To determine the rounded-up value,
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display the contents of this file after assigning a value to it.
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The default value for this file is 1048576 (1 MiB).
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The default value for this file is 1048576 (1 MiB).
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The minimum value that can be assigned to this file is the system page size.
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Attempts to set a limit less than the page size cause
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Attempts to set a limit less than the page size cause
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.BR write (2)
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.BR write (2)
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to fail with the error
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to fail with the error
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