The branch main has been updated by bz:
URL:
https://cgit.FreeBSD.org/src/commit/?id=b382b78503b56ad6b787b995b46418db27adaa61
commit b382b78503b56ad6b787b995b46418db27adaa61
Author: Bjoern A. Zeeb <b...@freebsd.org>
AuthorDate: 2021-10-22 11:04:36 +0000
Commit: Bjoern A. Zeeb <b...@freebsd.org>
CommitDate: 2021-10-25 16:10:48 +0000
LinuxKPI: add kstrtou8() and kstrtou8_from_user() to kernel.h
Analogous to the other sized version of kstrto[u]<type>() and
kstrtobool_from_user() add the "u8" versions needed by a driver.
MFC after: 3 days
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D32598
---
sys/compat/linuxkpi/common/include/linux/kernel.h | 33 +++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/sys/compat/linuxkpi/common/include/linux/kernel.h
b/sys/compat/linuxkpi/common/include/linux/kernel.h
index 852603f75f8b..6cbd95c4ac64 100644
--- a/sys/compat/linuxkpi/common/include/linux/kernel.h
+++ b/sys/compat/linuxkpi/common/include/linux/kernel.h
@@ -393,6 +393,24 @@ kstrtouint(const char *cp, unsigned int base, unsigned int
*res)
return (0);
}
+static inline int
+kstrtou8(const char *cp, unsigned int base, u8 *res)
+{
+ char *end;
+ unsigned long temp;
+
+ *res = temp = strtoul(cp, &end, base);
+
+ /* skip newline character, if any */
+ if (*end == '\n')
+ end++;
+ if (*cp == 0 || *end != 0)
+ return (-EINVAL);
+ if (temp != (u8)temp)
+ return (-ERANGE);
+ return (0);
+}
+
static inline int
kstrtou16(const char *cp, unsigned int base, u16 *res)
{
@@ -484,6 +502,21 @@ kstrtobool_from_user(const char __user *s, size_t count,
bool *res)
return (kstrtobool(buf, res));
}
+static inline int
+kstrtou8_from_user(const char __user *s, size_t count, unsigned int base,
+ u8 *p)
+{
+ char buf[8] = {};
+
+ if (count > (sizeof(buf) - 1))
+ count = (sizeof(buf) - 1);
+
+ if (copy_from_user(buf, s, count))
+ return (-EFAULT);
+
+ return (kstrtou8(buf, base, p));
+}
+
#define min(x, y) ((x) < (y) ? (x) : (y))
#define max(x, y) ((x) > (y) ? (x) : (y))
