11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2008-2011 Kay Sievers
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***/
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include "device-nodes.h"
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#include "utf8.h"
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int whitelisted_char_for_devnode(char c, const char *white) {
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if ((c >= '0' && c <= '9') ||
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(c >= 'A' && c <= 'Z') ||
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(c >= 'a' && c <= 'z') ||
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strchr("#+-.:=@_", c) != NULL ||
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(white != NULL && strchr(white, c) != NULL))
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return 1;
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return 0;
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}
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int encode_devnode_name(const char *str, char *str_enc, size_t len) {
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size_t i, j;
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if (!str || !str_enc)
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return -EINVAL;
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for (i = 0, j = 0; str[i] != '\0'; i++) {
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int seqlen;
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seqlen = utf8_encoded_valid_unichar(&str[i]);
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if (seqlen > 1) {
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if (len-j < (size_t)seqlen)
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return -EINVAL;
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memcpy(&str_enc[j], &str[i], seqlen);
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j += seqlen;
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i += (seqlen-1);
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} else if (str[i] == '\\' || !whitelisted_char_for_devnode(str[i], NULL)) {
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if (len-j < 4)
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return -EINVAL;
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sprintf(&str_enc[j], "\\x%02x", (unsigned char) str[i]);
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j += 4;
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} else {
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if (len-j < 1)
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return -EINVAL;
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str_enc[j] = str[i];
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j++;
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}
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}
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if (len-j < 1)
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return -EINVAL;
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str_enc[j] = '\0';
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return 0;
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}
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