Lennart Poettering
868258cf38
This way we don't have to pull in net/if.h into format-util.h. This is supposed to address https://github.com/systemd/systemd/pull/32212#discussion_r1755639881 No actual code changes, just a .c/.h file split-up.
38 lines
1002 B
C
38 lines
1002 B
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include "format-ifname.h"
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#include "string-util.h"
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assert_cc(STRLEN("%") + DECIMAL_STR_MAX(int) <= IF_NAMESIZE);
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int format_ifname_full(int ifindex, FormatIfnameFlag flag, char buf[static IF_NAMESIZE]) {
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if (ifindex <= 0)
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return -EINVAL;
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if (if_indextoname(ifindex, buf))
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return 0;
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if (!FLAGS_SET(flag, FORMAT_IFNAME_IFINDEX))
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return -errno;
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if (FLAGS_SET(flag, FORMAT_IFNAME_IFINDEX_WITH_PERCENT))
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assert_se(snprintf_ok(buf, IF_NAMESIZE, "%%%d", ifindex));
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else
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assert_se(snprintf_ok(buf, IF_NAMESIZE, "%d", ifindex));
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return 0;
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}
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int format_ifname_full_alloc(int ifindex, FormatIfnameFlag flag, char **ret) {
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char buf[IF_NAMESIZE];
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int r;
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assert(ret);
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r = format_ifname_full(ifindex, flag, buf);
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if (r < 0)
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return r;
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return strdup_to(ret, buf);
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}
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