#include <stddef.h>
#endif
-#ifdef HAVE_UNISTD_H
+#if defined HAVE_UNISTD_H || defined _LIBC
#include <unistd.h>
#ifndef POSIX
#ifdef _POSIX_VERSION
if (dirname == NULL || dirname[0] == '\0')
{
extern char *getlogin __P ((void));
- char *name = getlogin ();
- if (name != NULL)
+ extern int getlogin_r __P ((char *, size_t));
+ int success;
+
+#if defined HAVE_GETLOGIN_R || defined _LIBC
+ size_t buflen = sysconf (_SC_LOGIN_NAME_MAX) + 1;
+ char *name;
+
+ if (buflen == 0)
+ /* `sysconf' does not support _SC_LOGIN_NAME_MAX. Try
+ a moderate value. */
+ buflen = 16;
+ name = __alloca (buflen);
+
+ success = getlogin_r (name, buflen) >= 0;
+#else
+ char *name;
+ success = (name = getlogin ()) != NULL;
+#endif
+ if (success)
{
+#if defined HAVE_GETPWNAM_R || defined _LIBC
+ size_t pwbuflen = sysconf (_SC_GETPW_R_SIZE_MAX);
+ char *pwtmpbuf;
+ struct passwd pwbuf, *p;
+
+ pwtmpbuf = __alloca (pwbuflen);
+
+ success = (__getpwnam_r (name, &pwbuf, pwtmpbuf,
+ pwbuflen, &p) >= 0);
+#else
struct passwd *p = getpwnam (name);
- if (p != NULL)
+ success = p != NULL;
+#endif
+ if (success)
dirname = p->pw_dir;
}
}
dirname = "c:/users/default"; /* poor default */
#else
/* Look up specific user's home directory. */
+#if defined HAVE_GETPWNAM_R || defined _LIBC
+ size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
+ char *pwtmpbuf = __alloca (buflen);
+ struct passwd pwbuf, *p;
+ if (__getpwnam_r (dirname + 1, &pwbuf, pwtmpbuf, buflen, &p) >= 0)
+ dirname = p->pw_dir;
+#else
struct passwd *p = getpwnam (dirname + 1);
if (p != NULL)
dirname = p->pw_dir;
+#endif
#endif /* WIN32 */
#endif
}