quotactl.2: Add documentation for quotactl_path()
diff mbox series

Message ID 20210211153024.32502-4-s.hauer@pengutronix.de
State New, archived
Headers show
  • quota: Add mountpath based quota support
Related show

Commit Message

Sascha Hauer Feb. 11, 2021, 3:30 p.m. UTC
Expand the quotactl.2 manpage with a description for quotactl_path()
that takes a mountpoint path instead of a path to a block device.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 man2/quotactl.2      | 31 ++++++++++++++++++++++++++++---
 man2/quotactl_path.2 |  1 +
 2 files changed, 29 insertions(+), 3 deletions(-)
 create mode 100644 man2/quotactl_path.2

diff mbox series

diff --git a/man2/quotactl.2 b/man2/quotactl.2
index 7869c64ea..76505c668 100644
--- a/man2/quotactl.2
+++ b/man2/quotactl.2
@@ -34,6 +34,8 @@  quotactl \- manipulate disk quotas
 .BI "int quotactl(int " cmd ", const char *" special ", int " id \
 ", caddr_t " addr );
+.BI "int quotactl_path(int " cmd ", const char *" mountpoint ", int " id \
+", caddr_t " addr );
 The quota system can be used to set per-user, per-group, and per-project limits
@@ -48,7 +50,11 @@  after this, the soft limit counts as a hard limit.
 .BR quotactl ()
-call manipulates disk quotas.
+.BR quotactl_path ()
+calls manipulate disk quotas. The difference between both functions is the way
+how the filesystem being manipulated is specified, see description of the arguments
 .I cmd
 argument indicates a command to be applied to the user or
@@ -75,10 +81,19 @@  value is described below.
 .I special
-argument is a pointer to a null-terminated string containing the pathname
+argument to
+.BR quotactl ()
+is a pointer to a null-terminated string containing the pathname
 of the (mounted) block special device for the filesystem being manipulated.
+.I mountpoint
+argument to
+.BR quotactl_path ()
+is a pointer to a null-terminated string containing the pathname
+of the mountpoint for the filesystem being manipulated.
 .I addr
 argument is the address of an optional, command-specific, data structure
 that is copied in or out of the system.
@@ -133,7 +148,17 @@  flag in the
 .I dqi_flags
 field returned by the
+operation. The
+.BR quotactl_path ()
+variant of this syscall generally ignores the
+.IR addr
+.IR id
+arguments, so the
+operation of
+.BR quotactl_path ()
+is only suitable for work with hidden system inodes.
 This operation requires privilege
diff --git a/man2/quotactl_path.2 b/man2/quotactl_path.2
new file mode 100644
index 000000000..5f63187c6
--- /dev/null
+++ b/man2/quotactl_path.2
@@ -0,0 +1 @@ 
+.so man2/quotactl.2