Compiler quietening

[exim.git] / src / src / functions.h

diff --git a/src/src/functions.h b/src/src/functions.h
index f8c0bbf8a2e4ab8b20c1271e70c33e4d952fefbe..1b1a17dcbb63ef94cba853a96452323998e55d32 100644 (file)
--- a/src/src/functions.h
+++ b/src/src/functions.h
@@ -10,6 +10,8 @@
 to avoid having a lot of tiddly little headers with only a couple of lines in
 them. However, some functions that are used (or not used) by utility programs
 are in in fact in separate headers. */
+#ifndef _FUNCTIONS_H_
+#define _FUNCTIONS_H_
 
 
 #ifdef EXIM_PERL
@@ -209,6 +211,8 @@ extern BOOL    enq_start(uschar *, unsigned);
 extern uschar *event_raise(uschar *, const uschar *, uschar *);
 extern void    msg_event_raise(const uschar *, const address_item *);
 #endif
+
+extern int     exim_chown_failure(int, const uschar*, uid_t, gid_t);
 extern const uschar * exim_errstr(int);
 extern void    exim_exit(int, const uschar *);
 extern void    exim_nullstd(void);
@@ -572,7 +576,7 @@ extern int     verify_check_header_address(uschar **, uschar **, int, int, int,
 extern int     verify_check_headers(uschar **);
 extern int     verify_check_header_names_ascii(uschar **);
 extern int     verify_check_host(uschar **);
-extern int     verify_check_notblind(void);
+extern int     verify_check_notblind(BOOL);
 extern int     verify_check_given_host(const uschar **, const host_item *);
 extern int     verify_check_this_host(const uschar **, unsigned int *,
                 const uschar*, const uschar *, const uschar **);
@@ -586,6 +590,40 @@ extern BOOL    write_chunk(transport_ctx *, uschar *, int);
 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
 
 
+/* exim_chown - in some NFSv4 setups *seemes* to be an issue with
+chown(<exim-uid>, <exim-gid>).
+
+Probably because the idmapping is broken, misconfigured or set up in
+an unusal way. (see Bug 2931). As I'm not sure, if this was a single
+case of misconfiguration, or if there are more such broken systems
+out, I try to impose as least impact as possible and for now just write
+a panic log entry pointing to the bug report. You're encouraged to
+contact the developers, if you experience this issue.
+
+fd     the file descriptor (or -1 if not valid)
+name   the file name for error messages or for file operations,
+  if fd is < 0
+owner  the owner
+group  the group
+
+returns 0 on success, -1 on failure */
+
+static inline int
+exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
+{
+return fchown(fd, owner, group)
+  ? exim_chown_failure(fd, name, owner, group) : 0;
+}
+
+static inline int
+exim_chown(const uschar *name, uid_t owner, gid_t group)
+{
+return chown(CCS name, owner, group)
+  ? exim_chown_failure(-1, name, owner, group) : 0;
+}
+
+#endif  /* _FUNCTIONS_H_ */
+
 /* vi: aw
 */
 /* End of functions.h */