| Message ID | 20210423011517.4069221-2-revest@chromium.org (mailing list archive) |
|---|---|
| State | Changes Requested |
| Delegated to: | BPF |
| Headers | show |
| Series | Implement BPF formatted output helpers with bstr_printf | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Clearly marked for bpf-next |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | warning | 9 maintainers not CCed: netdev@vger.kernel.org viro@zeniv.linux.org.uk yhs@fb.com akpm@linux-foundation.org wangkefeng.wang@huawei.com kafai@fb.com john.fastabend@gmail.com linux-fsdevel@vger.kernel.org songliubraving@fb.com |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 19228 this patch: 19228 |
| netdev/kdoc | success | Errors and warnings before: 1 this patch: 1 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 34 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 18806 this patch: 18806 |
| netdev/header_inline | success | Link |
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 diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h index b83b3ae3c877..723b1fa1177e 100644 --- a/include/linux/seq_file.h +++ b/include/linux/seq_file.h @@ -146,6 +146,10 @@ void *__seq_open_private(struct file *, const struct seq_operations *, int); int seq_open_private(struct file *, const struct seq_operations *, int); int seq_release_private(struct inode *, struct file *); +#ifdef CONFIG_BINARY_PRINTF +void seq_bprintf(struct seq_file *m, const char *f, const u32 *binary); +#endif + #define DEFINE_SEQ_ATTRIBUTE(__name) \ static int __name ## _open(struct inode *inode, struct file *file) \ { \
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> --- fs/seq_file.c | 18 ++++++++++++++++++ include/linux/seq_file.h | 4 ++++ 2 files changed, 22 insertions(+)