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authorH. Peter Anvin <hpa@zytor.com>2008-03-26 16:25:35 -0700
committerH. Peter Anvin <hpa@zytor.com>2008-03-26 16:25:35 -0700
commit9eddd22a7b53b1d02fbae0d987df8af122924248 (patch)
tree882f5152880b0b1aa2d7a0619d30065acc69fb16 /gpxe/src/core/misc.c
parentbbb8f15936b851e6a0ef6f7bb2c95197bff35994 (diff)
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Add gPXE into the source tree; build unified imagesyslinux-3.70-pre7
Diffstat (limited to 'gpxe/src/core/misc.c')
-rw-r--r--gpxe/src/core/misc.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/gpxe/src/core/misc.c b/gpxe/src/core/misc.c
new file mode 100644
index 00000000..1f51272d
--- /dev/null
+++ b/gpxe/src/core/misc.c
@@ -0,0 +1,91 @@
+/**************************************************************************
+MISC Support Routines
+**************************************************************************/
+
+#include <stdlib.h>
+#include <byteswap.h>
+#include <gpxe/in.h>
+#include <gpxe/timer.h>
+
+/**************************************************************************
+INET_ATON - Convert an ascii x.x.x.x to binary form
+**************************************************************************/
+int inet_aton ( const char *cp, struct in_addr *inp ) {
+ const char *p = cp;
+ const char *digits_start;
+ unsigned long ip = 0;
+ unsigned long val;
+ int j;
+ for(j = 0; j <= 3; j++) {
+ digits_start = p;
+ val = strtoul(p, ( char ** ) &p, 10);
+ if ((p == digits_start) || (val > 255)) return 0;
+ if ( ( j < 3 ) && ( *(p++) != '.' ) ) return 0;
+ ip = (ip << 8) | val;
+ }
+ if ( *p == '\0' ) {
+ inp->s_addr = htonl(ip);
+ return 1;
+ }
+ return 0;
+}
+
+int isspace ( int c ) {
+ switch ( c ) {
+ case ' ':
+ case '\f':
+ case '\n':
+ case '\r':
+ case '\t':
+ case '\v':
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+unsigned long strtoul ( const char *p, char **endp, int base ) {
+ unsigned long ret = 0;
+ unsigned int charval;
+
+ while ( isspace ( *p ) )
+ p++;
+
+ if ( base == 0 ) {
+ base = 10;
+ if ( *p == '0' ) {
+ p++;
+ base = 8;
+ if ( ( *p | 0x20 ) == 'x' ) {
+ p++;
+ base = 16;
+ }
+ }
+ }
+
+ while ( 1 ) {
+ charval = *p;
+ if ( charval >= 'a' ) {
+ charval = ( charval - 'a' + 10 );
+ } else if ( charval >= 'A' ) {
+ charval = ( charval - 'A' + 10 );
+ } else if ( charval <= '9' ) {
+ charval = ( charval - '0' );
+ }
+ if ( charval >= ( unsigned int ) base )
+ break;
+ ret = ( ( ret * base ) + charval );
+ p++;
+ }
+
+ if ( endp )
+ *endp = ( char * ) p;
+
+ return ( ret );
+}
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */