fs/bcachefs/printbuf.h

40  * memory allocation failure we usually don't want to bail out and unwind - we
104 __printf(2, 3) void bch2_prt_printf(struct printbuf *out, const char *fmt, ...);
105 __printf(2, 0) void bch2_prt_vprintf(struct printbuf *out, const char *fmt, va_list);
143 static inline unsigned printbuf_remaining_size(struct printbuf *out)
145 	return out->pos < out->size ? out->size - out->pos : 0;
152 static inline unsigned printbuf_remaining(struct printbuf *out)
154 	return out->pos < out->size ? out->size - out->pos - 1 : 0;
157 static inline unsigned printbuf_written(struct printbuf *out)
159 	return out->size ? min(out->pos, out->size - 1) : 0;
165 static inline bool printbuf_overflowed(struct printbuf *out)
167 	return out->pos >= out->size;
170 static inline void printbuf_nul_terminate(struct printbuf *out)
172 	bch2_printbuf_make_room(out, 1);
174 	if (out->pos < out->size)
175 		out->buf[out->pos] = 0;
176 	else if (out->size)
177 		out->buf[out->size - 1] = 0;
181 static inline void __prt_char_reserved(struct printbuf *out, char c)
183 	if (printbuf_remaining(out))
184 		out->buf[out->pos] = c;
185 	out->pos++;
189 static inline void __prt_char(struct printbuf *out, char c)
191 	bch2_printbuf_make_room(out, 1);
192 	__prt_char_reserved(out, c);
195 static inline void prt_char(struct printbuf *out, char c)
197 	__prt_char(out, c);
198 	printbuf_nul_terminate(out);
201 static inline void __prt_chars_reserved(struct printbuf *out, char c, unsigned n)
203 	unsigned i, can_print = min(n, printbuf_remaining(out));
206 		out->buf[out->pos++] = c;
207 	out->pos += n - can_print;
210 static inline void prt_chars(struct printbuf *out, char c, unsigned n)
212 	bch2_printbuf_make_room(out, n);
213 	__prt_chars_reserved(out, c, n);
214 	printbuf_nul_terminate(out);
217 static inline void prt_bytes(struct printbuf *out, const void *b, unsigned n)
221 	bch2_printbuf_make_room(out, n);
223 	can_print = min(n, printbuf_remaining(out));
226 		out->buf[out->pos++] = ((char *) b)[i];
227 	out->pos += n - can_print;
229 	printbuf_nul_terminate(out);
232 static inline void prt_str(struct printbuf *out, const char *str)
234 	prt_bytes(out, str, strlen(str));
237 static inline void prt_str_indented(struct printbuf *out, const char *str)
239 	bch2_prt_bytes_indented(out, str, strlen(str));
242 static inline void prt_hex_byte(struct printbuf *out, u8 byte)
244 	bch2_printbuf_make_room(out, 2);
245 	__prt_char_reserved(out, hex_asc_hi(byte));
246 	__prt_char_reserved(out, hex_asc_lo(byte));
247 	printbuf_nul_terminate(out);
250 static inline void prt_hex_byte_upper(struct printbuf *out, u8 byte)
252 	bch2_printbuf_make_room(out, 2);
253 	__prt_char_reserved(out, hex_asc_upper_hi(byte));
254 	__prt_char_reserved(out, hex_asc_upper_lo(byte));
255 	printbuf_nul_terminate(out);