debloat code that depends on /proc/self/fd/%d with shared function

I intend to add more Linux workarounds that depend on using these
pathnames, and some of them will be in "syscall" functions that, from
an anti-bloat standpoint, should not depend on the whole snprintf
framework.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/unistd/ttyname_r.c b/src/unistd/ttyname_r.c
index 2255e2df..a2ce3511 100644
--- a/src/unistd/ttyname_r.c
+++ b/src/unistd/ttyname_r.c
@@ -3,6 +3,8 @@
 #include <stdio.h>
 #include <string.h>
 
+void __procfdname(char *, unsigned);
+
 int ttyname_r(int fd, char *name, size_t size)
 {
 	char procname[sizeof "/proc/self/fd/" + 3*sizeof(int) + 2];
@@ -10,7 +12,7 @@ int ttyname_r(int fd, char *name, size_t size)
 
 	if (!isatty(fd)) return ENOTTY;
 
-	snprintf(procname, sizeof procname, "/proc/self/fd/%d", fd);
+	__procfdname(procname, fd);
 	l = readlink(procname, name, size);
 
 	if (l < 0) return errno;