From: Alan Cox <alan@linux.intel.com>
Date: Sun, 28 Dec 2014 22:43:50 +0000 (+0000)
Subject: sysconf/pathconf: Add pathconf, update sysconf
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=6590fddf2ef30003bfd8bfcdd2cc2e2f635d37ee;p=FUZIX.git

sysconf/pathconf: Add pathconf, update sysconf

Add load average interface
Add pathconf interfaces, first cut
---

diff --git a/Library/include/unistd.h b/Library/include/unistd.h
index 0116954d..65cb3169 100644
--- a/Library/include/unistd.h
+++ b/Library/include/unistd.h
@@ -43,7 +43,10 @@ extern int pause __P((void));
 extern int fork __P((void));
 extern char *getcwd __P((char *, int));
 
-extern long sysconf(int name);
+extern long sysconf __P((int name));
+extern long fpathconf __P((int fd, int name));
+extern long pathconf __P((const char *path, int name));
+extern long _pathconf __P((int name));
 
 #define _SC_ARG_MAX		1
 #define _SC_CHILD_MAX		2
@@ -67,6 +70,29 @@ extern long sysconf(int name);
 #define _SC_JOB_CONTROL		19
 #define _SC_SAVED_IDS		20
 
+#define _SC_FUZIX_LOADAVG1	64
+#define _SC_FUZIX_LOADAVG5	65
+#define _SC_FUZIX_LOADAVG15	66
+
+#define _PC_LINK_MAX		1
+#define _PC_MAX_CANON		2
+#define _PC_MAX_INPUT		3
+#define _PC_NAME_MAX		4
+#define _PC_PATH_MAX		5
+#define _PC_PIPE_BUF		6
+#define _PC_CHOWN_RESTRICTED	7
+#define _PC_NO_TRUNC		8
+#define _PC_VDISABLE		9
+
+#define _POSIX_LINK_MAX		_pathconf(_PC_LINK_MAX)
+#define _POSIX_MAX_CANON	_pathconf(_PC_MAX_CANON)
+#define _POSIX_MAX_INPUT	_pathconf(_PC_MAX_INPUT)
+#define _POSIX_NAME_MAX		_pathconf(_PC_NAME_MAX)
+#define _POSIX_PATH_MAX		_pathconf(_PC_PATH_MAX)
+#define _POSIX_PIPE_BUF		_pathconf(_PC_PIPE_BUF)
+#define _POSIX_CHOWN_RESTRICTED _pathconf(_PC_CHOWN_RESTRICTED)
+#define _POSIX_NO_TRUNC		_pathconf(_PC_NO_TRUNC)
+
 extern int gethostname(char *name, size_t len);
 extern int sethostname(const char *name, size_t len);
 
@@ -86,15 +112,4 @@ extern void exit __P((int));
 #define F_TLOCK	2
 #define F_TEST	3
 
-
-#define _PC_LINK_MAX	0
-#define _PC_MAX_CANON	1
-#define _PC_MAX_INPUT	2
-#define _PC_NAME_MAX	3
-#define _PC_PATH_MAX	4
-#define _PC_PIPE_BUF	5
-#define _PC_CHOWN_RESTRICTED	6
-#define _PC_NO_TRUNC	7
-#define _PC_VDISABLE	8
-
 #endif /* __UNISTD_H */
diff --git a/Library/libs/Makefile b/Library/libs/Makefile
index fcf44a57..254e6ce7 100644
--- a/Library/libs/Makefile
+++ b/Library/libs/Makefile
@@ -30,7 +30,7 @@ SRC_C += strdup.c stricmp.c strncasecmp.c
 SRC_C += strnicmp.c strsep.c
 SRC_C += strtod.c strtol.c system.c time.c tmpnam.c ttyname.c
 SRC_C += tzset.c ungetc.c utent.c utsname.c
-SRC_C += vfprintf.c vprintf.c wait.c xitoa.c
+SRC_C += vfprintf.c vprintf.c wait.c xitoa.c pathconf.c
 SRC_C += gethostname.c sysconf.c confstr.c memccpy.c getpass.c
 # tty layer
 SRC_C += tcgetattr.c tcsetattr.c tcdrain.c tcflow.c tcflush.c
diff --git a/Library/libs/pathconf.c b/Library/libs/pathconf.c
new file mode 100644
index 00000000..1751b0cc
--- /dev/null
+++ b/Library/libs/pathconf.c
@@ -0,0 +1,43 @@
+#include <unistd.h>
+#include <errno.h>
+
+long _pathconf(int name)
+{
+  struct _uzisysinfoblk info;
+  
+  _uname(&info, sizeof(info));
+
+  switch(name) {
+    case _PC_LINK_MAX:
+      return 65535;
+    case _PC_MAX_CANON:
+    case _PC_MAX_INPUT:
+      return 132;		/* In theory must be 256+ .. */
+    case _PC_NAME_MAX:
+      return 30;
+    case _PC_PATH_MAX:
+      return 512;
+    case _PC_PIPE_BUF:
+      return 4096;		/* FIXME: wrong but need to sort socket
+                                   buffers out to know the right answers */
+    case _PC_CHOWN_RESTRICTED:
+      return 1;
+    case _PC_NO_TRUNC:
+      return 0;
+    case _PC_VDISABLE:
+      return 1;
+  }
+  return -1;
+}
+
+long pathconf(char *p, int name)
+{
+  p;
+  return _pathconf(name);
+}
+
+long fpathconf(int fd, int name)
+{
+  fd;
+  return _pathconf(name);
+}
diff --git a/Library/libs/sysconf.c b/Library/libs/sysconf.c
index 62a6d0d5..d502f78d 100644
--- a/Library/libs/sysconf.c
+++ b/Library/libs/sysconf.c
@@ -53,6 +53,12 @@ long sysconf(int name)
     case _SC_NPROCESSORS_CONF:
     case _SC_NPROCESSORS_ONLN:
       return 1;
+    case _SC_FUZIX_LOADAVG1:
+      return info.loadavg[0];
+    case _SC_FUZIX_LOADAVG5:
+      return info.loadavg[1];
+    case _SC_FUZIX_LOADAVG15:
+      return info.loadavg[2];
     default:
       errno = EINVAL;
       return -1;