Minix/minix
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Reorganized system call library; uses separate file per call now.

Browse Source 
New configuration header file to include/ exclude functionality.
Extracted privileged features from struct proc and create new struct priv.
Renamed various system calls for readability.
This commit is contained in:
Jorrit Herder
2005-07-14 15:12:12 +00:00
parent 355d22ff06
commit 42ab148155
53 changed files with 1957 additions and 1503 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
kernel/klibc.c
View File

@@ -9,14 +9,13 @@
* kmemset: set n bytes to c starting at pointer p
* kprintf: printf for the kernel (see working below)
* kstrcmp: lexicographical comparison of two strings
* kstrlen: get number of non-null characters in string
* kstrncpy: copy string and pad or copy up to n chars
*
* This file contains the routines that take care of kernel messages, i.e.,
* diagnostic output within the kernel. Kernel messages are not directly
* displayed on the console, because this must be done by the PRINT driver.
* Instead, the kernel accumulates characters in a buffer and notifies the
* PRINT driver when a new message is ready.
* output driver when a new message is ready.
*/
#include "kernel.h"
@@ -154,63 +153,31 @@ int c; /* character to append */
/* Accumulate a single character for a kernel message. Send a notification
* the to PRINTF_PROC driver if an END_OF_KMESS is encountered.
*/
message m;
if (c != END_OF_KMESS) {
kmess.km_buf[kmess.km_next] = c; /* put normal char in buffer */
if (kmess.km_size < KMESS_BUF_SIZE)
kmess.km_size += 1;
kmess.km_next = (kmess.km_next + 1) % KMESS_BUF_SIZE;
} else {
m.NOTIFY_TYPE = NEW_KMESS;
lock_notify(PRINTF_PROC, &m);
lock_alert(SYSTEM, PRINTF_PROC);
}
}
/*=========================================================================*
* kstrlen *
*=========================================================================*/
PUBLIC size_t kstrlen(const char *org)
{
register const char *s = org;
while (*s++)
/* EMPTY */ ;
return --s - org;
}
/*=========================================================================*
* kstrcmp *
*=========================================================================*/
int kstrcmp(register const char *s1, register const char *s2)
{
while (*s1 == *s2++) {
while (*s1 == *s2++)
if (*s1++ == '\0') return 0;
}
if (*s1 == '\0') return -1;
if (*--s2 == '\0') return 1;
return (unsigned char) *s1 - (unsigned char) *s2;
}
/*=========================================================================*
* kstrncmp *
*=========================================================================*/
PUBLIC int kstrncmp(register const char *s1, register const char *s2, register size_t n)
{
while (n > 0 && *s1 == *s2++) {
if (*s1++ == '\0') return 0;
n--;
}
if (n > 0) {
if (*s1 == '\0') return -1;
if (*--s2 == '\0') return 1;
return (unsigned char) *s1 - (unsigned char) *s2;
}
return 0;
}
/*=========================================================================*
* kstrncpy *
*=========================================================================*/