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https://git.yoctoproject.org/poky
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30 lines
998 B
Diff
30 lines
998 B
Diff
Hi,
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int sysfs_write_attribute(struct sysfs_attribute *sysattr,
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const char *new_value, size_t len)
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has a problematic "feature": if the file is empty but readable, nothing gets
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written into it. The attached patch (untested) should fix it.
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Dominik
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The check which tests whether the value to be written into a sysfs attribute
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is already there should only trigger if the length of both strings is the
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same.
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Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
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--- sysfsutils-1.2.0/lib/sysfs_dir.c.original 2005-02-21 08:10:33.000000000 +0100
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+++ sysfsutils-1.2.0/lib/sysfs_dir.c 2005-02-21 08:14:01.000000000 +0100
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@@ -194,7 +194,8 @@
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dprintf("Error reading attribute\n");
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return -1;
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}
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- if ((strncmp(sysattr->value, new_value, sysattr->len)) == 0) {
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+ if (((strncmp(sysattr->value, new_value, sysattr->len)) == 0)&&
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+ (len == sysattr->len)) {
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dprintf("Attr %s already has the requested value %s\n",
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sysattr->name, new_value);
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return 0;
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