kernel/pcpy: minor cleanup, implement pcpy_from_str

might potentially be used in a reworked open(), mount() etc interface

1 files changed, 4 insertions, 0 deletions

diff --git a/src/kernel/proc.h b/src/kernel/proc.h
index 0de740f..4ad6580 100644
--- a/src/kernel/proc.h
+++ b/src/kernel/proc.h
@@ -145,3 +145,7 @@ size_t pcpy_bi(
 	Proc *srcp, const __user void *src,
 	size_t len
 );
+/* Copies a NUL-terminated string from the process.
+ * Returns the size of the string including the NUL terminator,
+ * and 0 on error or if the string didn't fit in dst. */
+size_t pcpy_from_str(Proc *p, char *dst, const __user char *src, size_t len);