From 38de045079736def92d26186e09fe8db3d82c4b0 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Thu, 2 Sep 2021 17:00:05 +0000
Subject:  Pass errno as unsigned char

Signed-off-by: Laurent Bercot <ska@appnovation.com>
---
 src/utmps/utmps_getent.c   | 2 +-
 src/utmps/utmps_getid.c    | 2 +-
 src/utmps/utmps_getline.c  | 2 +-
 src/utmps/utmps_putline.c  | 2 +-
 src/utmps/utmps_rewind.c   | 4 ++--
 src/utmps/utmps_updwtmpx.c | 2 +-
 6 files changed, 7 insertions(+), 7 deletions(-)

(limited to 'src')

diff --git a/src/utmps/utmps_getent.c b/src/utmps/utmps_getent.c
index 7b98c34..91e6366 100644
--- a/src/utmps/utmps_getent.c
+++ b/src/utmps/utmps_getent.c
@@ -15,7 +15,7 @@ int utmps_getent (utmps *a, struct utmpx *b, tain const *deadline, tain *stamp)
   r = ipc_timed_recv(a->fd, buf, sizeof(buf), 0, deadline, stamp) ;
   if (r < 0) return 0 ;
   if (!r) return (errno = EPIPE, 0) ;
-  if (buf[0]) return (errno = buf[0], 0) ;
+  if (buf[0]) return (errno = (unsigned char)buf[0], 0) ;
   utmps_utmpx_unpack(buf + 1, b) ;
   return 1 ;
 }
diff --git a/src/utmps/utmps_getid.c b/src/utmps/utmps_getid.c
index b07b989..90e7d2a 100644
--- a/src/utmps/utmps_getid.c
+++ b/src/utmps/utmps_getid.c
@@ -21,7 +21,7 @@ int utmps_getid (utmps *a, unsigned short type, char const *id, struct utmpx *b,
   r = ipc_timed_recv(a->fd, rbuf, sizeof(rbuf), 0, deadline, stamp) ;
   if (r < 0) return 0 ;
   if (!r) return (errno = EPIPE, 0) ;
-  if (rbuf[0]) return (errno = rbuf[0], 0) ;
+  if (rbuf[0]) return (errno = (unsigned char)rbuf[0], 0) ;
   utmps_utmpx_unpack(rbuf + 1, b) ;
   return 1 ;
 }
diff --git a/src/utmps/utmps_getline.c b/src/utmps/utmps_getline.c
index cb7c984..6375f5d 100644
--- a/src/utmps/utmps_getline.c
+++ b/src/utmps/utmps_getline.c
@@ -19,7 +19,7 @@ int utmps_getline (utmps *a, char const *line, struct utmpx *b, tain const *dead
   r = ipc_timed_recv(a->fd, rbuf, sizeof(rbuf), 0, deadline, stamp) ;
   if (r < 0) return 0 ;
   if (!r) return (errno = EPIPE, 0) ;
-  if (rbuf[0]) return (errno = rbuf[0], 0) ;
+  if (rbuf[0]) return (errno = (unsigned char)rbuf[0], 0) ;
   utmps_utmpx_unpack(rbuf + 1, b) ;
   return 1 ;
 }
diff --git a/src/utmps/utmps_putline.c b/src/utmps/utmps_putline.c
index 04ed540..8324a3b 100644
--- a/src/utmps/utmps_putline.c
+++ b/src/utmps/utmps_putline.c
@@ -17,6 +17,6 @@ int utmps_putline (utmps *a, struct utmpx const *b, tain const *deadline, tain *
   r = ipc_timed_recv(a->fd, buf, 1, 0, deadline, stamp) ;
   if (r < 0) return 0 ;
   if (!r) return (errno = EPIPE, 0) ;
-  if (buf[0]) return (errno = buf[0], 0) ;
+  if (buf[0]) return (errno = (unsigned char)buf[0], 0) ;
   return 1 ;
 }
diff --git a/src/utmps/utmps_rewind.c b/src/utmps/utmps_rewind.c
index fe3c8ed..5c16cd6 100644
--- a/src/utmps/utmps_rewind.c
+++ b/src/utmps/utmps_rewind.c
@@ -9,9 +9,9 @@
 int utmps_rewind (utmps *a, tain const *deadline, tain *stamp)
 {
   ssize_t r ;
-  char c ;
+  unsigned char c ;
   if (!ipc_timed_send(a->fd, "r", 1, deadline, stamp)) return 0 ;
-  r = ipc_timed_recv(a->fd, &c, 1, 0, deadline, stamp) ;
+  r = ipc_timed_recv(a->fd, (char *)&c, 1, 0, deadline, stamp) ;
   if (r < 0) return 0 ;
   if (!r) return (errno = EPIPE, 0) ;
   if (c) return (errno = c, 0) ;
diff --git a/src/utmps/utmps_updwtmpx.c b/src/utmps/utmps_updwtmpx.c
index 5b0557e..33dd9bc 100644
--- a/src/utmps/utmps_updwtmpx.c
+++ b/src/utmps/utmps_updwtmpx.c
@@ -18,7 +18,7 @@ int utmps_updwtmpx (char const *path, struct utmpx const *b, tain const *deadlin
   r = ipc_timed_recv(a.fd, buf, 1, 0, deadline, stamp) ;
   if (r < 0) goto err ;
   if (!r) { errno = EPIPE ; goto err ; }
-  if (buf[0]) { errno = buf[0] ; goto err ; }
+  if (buf[0]) { errno = (unsigned char)buf[0] ; goto err ; }
   utmps_end(&a) ;
   return 1 ;
 
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