From: Christian Brauner <christian.brauner@xxxxxxxxxx>
Advertise to userspace that they should use proper pid_t types for
arguments returning a pid.
The kernel-internal struct kernel_clone_args currently uses int as type
and since POSIX mandates that pid_t is a signed integer type and glibc
and friends use int this is not an issue. After the merge window for
v5.5 closes we can switch struct kernel_clone_args over to using pid_t
as well without any danger in regressing current userspace.
Also note, that the new set tid feature which will be merged for v5.5
uses pid_t types as well.
Signed-off-by: Christian Brauner <christian.brauner@xxxxxxxxxx>
---
man2/clone.2 | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/man2/clone.2 b/man2/clone.2
index faff2ada6..bf2d7c731 100644
--- a/man2/clone.2
+++ b/man2/clone.2
@@ -183,9 +183,9 @@ is a structure of the following form:
struct clone_args {
u64 flags; /* Flags bit mask */
u64 pidfd; /* Where to store PID file descriptor
- (\fIint *\fP) */
+ (\fIpid_t *\fP) */
u64 child_tid; /* Where to store child TID,
- in child's memory (\fIint *\fP) */
+ in child's memory (\fIpid_t *\fP) */
u64 parent_tid; /* Where to store child TID,
in parent's memory (\fIint *\fP) */
u64 exit_signal; /* Signal to deliver to parent on
--
2.24.0
