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authorFlorent Revest <revest@chromium.org>2021-04-27 20:43:12 +0300
committerAlexei Starovoitov <ast@kernel.org>2021-04-28 01:50:15 +0300
commit76d6a13383b8e3ff20a9cf52aa9c3de39e485632 (patch)
treea514ff10079e19e036815347ddca67d30771300e /fs
parent2551c2d19c04cd1c7b6c99ec04a8ff08193b0ccc (diff)
downloadlinux-76d6a13383b8e3ff20a9cf52aa9c3de39e485632.tar.xz
seq_file: Add a seq_bprintf function
Similarly to seq_buf_bprintf in lib/seq_buf.c, this function writes a printf formatted string with arguments provided in a "binary representation" built by functions such as vbin_printf. Signed-off-by: Florent Revest <revest@chromium.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20210427174313.860948-2-revest@chromium.org
Diffstat (limited to 'fs')
-rw-r--r--fs/seq_file.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/seq_file.c b/fs/seq_file.c
index cb11a34fb871..5059248f2d64 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -412,6 +412,24 @@ void seq_printf(struct seq_file *m, const char *f, ...)
}
EXPORT_SYMBOL(seq_printf);
+#ifdef CONFIG_BINARY_PRINTF
+void seq_bprintf(struct seq_file *m, const char *f, const u32 *binary)
+{
+ int len;
+
+ if (m->count < m->size) {
+ len = bstr_printf(m->buf + m->count, m->size - m->count, f,
+ binary);
+ if (m->count + len < m->size) {
+ m->count += len;
+ return;
+ }
+ }
+ seq_set_overflow(m);
+}
+EXPORT_SYMBOL(seq_bprintf);
+#endif /* CONFIG_BINARY_PRINTF */
+
/**
* mangle_path - mangle and copy path to buffer beginning
* @s: buffer start