udev: link_update() should fail if the entry in symlink dir couldn't have been created
Follow-up for 30f6dce62c
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5e3effb1f3
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4e1db59274
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@ -214,20 +214,23 @@ static int link_update(sd_device *dev, const char *slink, bool add) {
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if (!filename)
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return log_oom();
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if (!add && unlink(filename) == 0)
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(void) rmdir(dirname);
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if (add)
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do {
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if (!add) {
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if (unlink(filename) == 0)
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(void) rmdir(dirname);
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} else
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for (;;) {
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_cleanup_close_ int fd = -1;
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r = mkdir_parents(filename, 0755);
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if (!IN_SET(r, 0, -ENOENT))
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break;
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return r;
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fd = open(filename, O_WRONLY|O_CREAT|O_CLOEXEC|O_TRUNC|O_NOFOLLOW, 0444);
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if (fd < 0)
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r = -errno;
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} while (r == -ENOENT);
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if (fd >= 0)
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break;
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if (errno != ENOENT)
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return -errno;
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}
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/* If the database entry is not written yet we will just do one iteration and possibly wrong symlink
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* will be fixed in the second invocation. */
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