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authorkay.sievers@vrfy.org <kay.sievers@vrfy.org>2003-12-15 22:54:38 -0800
committerGreg KH <gregkh@suse.de>2005-04-26 21:13:07 -0700
commitb1c5e3339deb97f4a30053111b444489a3bc9562 (patch)
tree55b8c3a031fcf01c4c8a9b48d8b3cd5f09f58377 /namedev.c
parent2052464275b50f27cc563aaee24aadd791a9d8ca (diff)
[PATCH] get part of callout return string
Try this patch if you like, to get special parts of the callout output. This beast works now: CALLOUT, BUS="scsi", PROGRAM="/bin/echo -n node link1 link2", ID="node *", NAME="%1c", SYMLINK="%2c %3c" The callout returned string is separated by spaces and is addressed by the "len" value of the 'c' format char. Since we support symlinks, this my be useful for other uses of callout too. introduce 'len number' for format chars the first use is 'c'-the callout return to select a part of the output string like: CALLOUT, BUS="scsi", PROGRAM="/bin/echo -n node link1 link2", ID="node *", NAME="%1c", SYMLINK="%2c %3c" (note: first part is requested by len=1, len=0 will return the whole string) add a test to udev-test.pl
Diffstat (limited to 'namedev.c')
-rw-r--r--namedev.c41
1 files changed, 36 insertions, 5 deletions
diff --git a/namedev.c b/namedev.c
index 74a411799b..212d6bb68d 100644
--- a/namedev.c
+++ b/namedev.c
@@ -200,15 +200,30 @@ static void build_kernel_number(struct sysfs_class_device *class_dev, struct ude
static void apply_format(struct udevice *udev, unsigned char *string)
{
char name[NAME_SIZE];
+ char temp[NAME_SIZE];
+ char *tail;
char *pos;
+ char *pos2;
+ char *pos3;
+ int num;
while (1) {
+ num = 0;
pos = strchr(string, '%');
if (pos) {
- strfieldcpy(name, pos+2);
- *pos = 0x00;
- switch (pos[1]) {
+ *pos = '\0';
+ tail = pos+1;
+ if (isdigit(tail[0])) {
+ num = (int) strtoul(&pos[1], &tail, 10);
+ if (tail == NULL) {
+ dbg("format parsing error '%s'", pos+1);
+ break;
+ }
+ }
+ strfieldcpy(name, tail+1);
+
+ switch (tail[0]) {
case 'b':
if (strlen(udev->bus_id) == 0)
break;
@@ -241,8 +256,24 @@ static void apply_format(struct udevice *udev, unsigned char *string)
case 'c':
if (strlen(udev->callout_value) == 0)
break;
- strcat(pos, udev->callout_value);
- dbg("substitute callout output '%s'", udev->callout_value);
+ if (num) {
+ /* get part of return string */
+ strncpy(temp, udev->callout_value, sizeof(temp));
+ pos2 = temp;
+ while (num) {
+ num--;
+ pos3 = strsep(&pos2, " ");
+ if (pos3 == NULL) {
+ dbg("requested part of callout string not found");
+ break;
+ }
+ }
+ strcat(pos, pos3);
+ dbg("substitute partial callout output '%s'", pos3);
+ } else {
+ strcat(pos, udev->callout_value);
+ dbg("substitute callout output '%s'", udev->callout_value);
+ }
break;
default:
dbg("unknown substitution type '%%%c'", pos[1]);