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53 lines
1.3 KiB
53 lines
1.3 KiB
1 month ago
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diff -up cups-1.5b1/backend/usb-unix.c.usb-paperout cups-1.5b1/backend/usb-unix.c
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--- cups-1.5b1/backend/usb-unix.c.usb-paperout 2011-05-24 15:51:39.000000000 +0200
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+++ cups-1.5b1/backend/usb-unix.c 2011-05-24 15:51:39.000000000 +0200
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@@ -30,6 +30,11 @@
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#include <sys/select.h>
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+#ifdef __linux
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+#include <sys/ioctl.h>
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+#include <linux/lp.h>
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+#endif /* __linux */
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+
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/*
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* Local functions...
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@@ -334,7 +339,19 @@ open_device(const char *uri, /* I - Dev
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if (!strncmp(uri, "usb:/dev/", 9))
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#ifdef __linux
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{
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- return (open(uri + 4, O_RDWR | O_EXCL));
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+ fd = open(uri + 4, O_RDWR | O_EXCL);
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+
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+ if (fd != -1)
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+ {
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+ /*
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+ * Tell the driver to return from write() with errno==ENOSPACE
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+ * on paper-out.
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+ */
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+ unsigned int t = 1;
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+ ioctl (fd, LPABORT, &t);
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+ }
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+
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+ return fd;
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}
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else if (!strncmp(uri, "usb://", 6))
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{
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@@ -400,7 +417,14 @@ open_device(const char *uri, /* I - Dev
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if (!strcmp(uri, device_uri))
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{
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/*
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- * Yes, return this file descriptor...
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+ * Yes, tell the driver to return from write() with
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+ * errno==ENOSPACE on paper-out.
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+ */
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+ unsigned int t = 1;
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+ ioctl (fd, LPABORT, &t);
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+
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+ /*
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+ * Return this file descriptor...
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*/
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fprintf(stderr, "DEBUG: Printer using device file \"%s\"...\n",
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