tidying: char signedness

6 files changed, 30 insertions, 29 deletions

diff --git a/src/OS/os.c-BSDI b/src/OS/os.c-BSDI
index 43e5bb147..03a7a1cef 100644
--- a/src/OS/os.c-BSDI
+++ b/src/OS/os.c-BSDI
@@ -12,8 +12,8 @@ src/os.c file. */
 #define OS_UNSETENV
 
 int
-os_unsetenv(const char *name)
+os_unsetenv(const uschar * name)
 {
-    unsetenv(name);
-    return 0;
+unsetenv(CS name);
+return 0;
 }
diff --git a/src/src/environment.c b/src/src/environment.c
index b768a0fd6..c394eb7e7 100644
--- a/src/src/environment.c
+++ b/src/src/environment.c
@@ -44,11 +44,12 @@ else if (Ustrcmp(keep_environment, "*") != 0)
     /* It's considered broken if we do not find the '=', according to
     Florian Weimer. For now we ignore such strings. unsetenv() would complain,
     getenv() would complain. */
-    uschar *eqp = Ustrchr(*p, '=');
+    uschar * eqp = Ustrchr(*p, '=');
 
     if (eqp)
       {
-      uschar *name = string_copyn(*p, eqp - *p);
+      uschar * name = string_copyn(*p, eqp - *p);
+
       if (OK != match_isinlist(name, CUSS &keep_environment,
           0, NULL, NULL, MCL_NOEXPAND, FALSE, NULL))
         if (os_unsetenv(name) < 0) return FALSE;
@@ -60,11 +61,11 @@ else if (Ustrcmp(keep_environment, "*") != 0)
   }
 if (add_environment)
   {
-    uschar *p;
+    uschar * p;
     int sep = 0;
-    const uschar* envlist = add_environment;
-    while ((p = string_nextinlist(&envlist, &sep, NULL, 0)))
-        putenv(CS p);
+    const uschar * envlist = add_environment;
+
+    while ((p = string_nextinlist(&envlist, &sep, NULL, 0))) putenv(CS p);
   }
 
   return TRUE;
diff --git a/src/src/os.c b/src/src/os.c
index 689ebfb1b..1cde1b8ec 100644
--- a/src/src/os.c
+++ b/src/src/os.c
@@ -844,9 +844,9 @@ os_get_dns_resolver_res(void)
 
 #if !defined(OS_UNSETENV)
 int
-os_unsetenv(const char *name)
+os_unsetenv(const uschar * name)
 {
-  return unsetenv(name);
+return unsetenv(CS name);
 }
 #endif
 
@@ -862,24 +862,24 @@ may not even do this. If the OS supports getcwd(NULL, 0) we'll use
 this, for all other systems we provide our own getcwd() */
 
 #if !defined(OS_GETCWD)
-char *
-os_getcwd(char *buffer, size_t size)
+uschar *
+os_getcwd(uschar * buffer, size_t size)
 {
-return getcwd(buffer, size);
+return getcwd(CS buffer, size);
 }
 #else
 #ifndef PATH_MAX
 # define PATH_MAX 4096
 #endif
-char *
-os_getcwd(char *buffer, size_t size)
+uschar *
+os_getcwd(uschar * buffer, size_t size)
 {
 void *rc;
 
 if (!size) size = PATH_MAX;
-if (!buffer && !(buffer = (char*) malloc(size))) return NULL;
-if (!(buffer = getcwd(buffer, size))) return NULL;
-return realloc(buffer, strlen(buffer) + 1);
+if (!buffer && !(buffer = US malloc(size))) return NULL;
+if (!(buffer = getcwd(CS buffer, size))) return NULL;
+return realloc(CS buffer, strlen(buffer) + 1);
 }
 #endif
 
diff --git a/src/src/osfunctions.h b/src/src/osfunctions.h
index a8e87fc3e..4e6e9a91c 100644
--- a/src/src/osfunctions.h
+++ b/src/src/osfunctions.h
@@ -33,10 +33,10 @@ extern const char   *os_strexit(int);     /* char to match os_strsignal */
 extern const char   *os_strsignal(int);   /* char to match strsignal in some OS */
 #endif
 #ifndef os_unsetenv
-extern int           os_unsetenv(const char *);
+extern int           os_unsetenv(const uschar *);
 #endif
 #ifndef os_getcwd
-extern char*         os_getcwd(char *, size_t);
+extern uschar       *os_getcwd(uschar *, size_t);
 #endif
 
 /* End of osfunctions.h */
diff --git a/src/src/tls.c b/src/src/tls.c
index be9377665..55295108c 100644
--- a/src/src/tls.c
+++ b/src/src/tls.c
@@ -99,7 +99,7 @@ restore_tz(uschar * tz)
 if (tz)
   (void) setenv("TZ", CCS tz, 1);
 else
-  (void) os_unsetenv("TZ");
+  (void) os_unsetenv(US"TZ");
 tzset();
 }
 
diff --git a/src/src/transports/smtp.c b/src/src/transports/smtp.c
index 6741c01a6..a8a78d945 100644
--- a/src/src/transports/smtp.c
+++ b/src/src/transports/smtp.c
@@ -3975,19 +3975,19 @@ for (addr = addrlist; addr != NULL; addr = addr->next)
       }
     else
       {
-      const uschar * s;
+      const char * s;
       if (hosts_retry == hosts_total)
-        s = US"retry time not reached for any host%s";
+        s = "retry time not reached for any host%s";
       else if (hosts_fail == hosts_total)
-        s = US"all host address lookups%s failed permanently";
+        s = "all host address lookups%s failed permanently";
       else if (hosts_defer == hosts_total)
-        s = US"all host address lookups%s failed temporarily";
+        s = "all host address lookups%s failed temporarily";
       else if (hosts_serial == hosts_total)
-        s = US"connection limit reached for all hosts%s";
+        s = "connection limit reached for all hosts%s";
       else if (hosts_fail+hosts_defer == hosts_total)
-        s = US"all host address lookups%s failed";
+        s = "all host address lookups%s failed";
       else
-        s = US"some host address lookups failed and retry time "
+        s = "some host address lookups failed and retry time "
         "not reached for other hosts or connection limit reached%s";
 
       addr->message = string_sprintf(s,