diff options
| -rw-r--r-- | include/hexdump.h | 75 | ||||
| -rw-r--r-- | lib/hexdump.c | 78 |
2 files changed, 77 insertions, 76 deletions
diff --git a/include/hexdump.h b/include/hexdump.h index f7b76ff7121..62fce7ae7b4 100644 --- a/include/hexdump.h +++ b/include/hexdump.h @@ -10,7 +10,7 @@ #include <linux/ctype.h> #include <linux/types.h> -enum { +enum dump_prefix_t { DUMP_PREFIX_NONE, DUMP_PREFIX_ADDRESS, DUMP_PREFIX_OFFSET @@ -81,10 +81,83 @@ static inline char *bin2hex(char *dst, const void *src, size_t count) return dst; } +/** + * hex_dump_to_buffer - convert a blob of data to "hex ASCII" in memory + * @buf: data blob to dump + * @len: number of bytes in the @buf + * @rowsize: number of bytes to print per line; must be 16 or 32 + * @groupsize: number of bytes to print at a time (1, 2, 4, 8; default = 1) + * @linebuf: where to put the converted data + * @linebuflen: total size of @linebuf, including space for terminating NUL + * @ascii: include ASCII after the hex output + * + * hex_dump_to_buffer() works on one "line" of output at a time, i.e., + * 16 or 32 bytes of input data converted to hex + ASCII output. + * + * Given a buffer of u8 data, hex_dump_to_buffer() converts the input data + * to a hex + ASCII dump at the supplied memory location. + * The converted output is always NUL-terminated. + * + * E.g.: + * hex_dump_to_buffer(frame->data, frame->len, 16, 1, + * linebuf, sizeof(linebuf), true); + * + * example output buffer: + * 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @ABCDEFGHIJKLMNO + * + * Return: + * The amount of bytes placed in the buffer without terminating NUL. If the + * output was truncated, then the return value is the number of bytes + * (excluding the terminating NUL) which would have been written to the final + * string if enough space had been available. + */ int hex_dump_to_buffer(const void *buf, size_t len, int rowsize, int groupsize, char *linebuf, size_t linebuflen, bool ascii); + +/** + * print_hex_dump - print a text hex dump to syslog for a binary blob of data + * @prefix_str: string to prefix each line with; + * caller supplies trailing spaces for alignment if desired + * @prefix_type: controls whether prefix of an offset, address, or none + * is printed (see enum dump_prefix_t) + * @rowsize: number of bytes to print per line; must be 16 or 32 + * @groupsize: number of bytes to print at a time (1, 2, 4, 8; default = 1) + * @buf: data blob to dump + * @len: number of bytes in the @buf + * @ascii: include ASCII after the hex output + * + * Given a buffer of u8 data, print_hex_dump() prints a hex + ASCII dump + * to the stdio, with an optional leading prefix. + * + * print_hex_dump() works on one "line" of output at a time, i.e., + * 16 or 32 bytes of input data converted to hex + ASCII output. + * print_hex_dump() iterates over the entire input @buf, breaking it into + * "line size" chunks to format and print. + * + * E.g.: + * print_hex_dump("raw data: ", DUMP_PREFIX_ADDRESS, 16, 1, frame->data, + * frame->len, true); + * + * Example output using %DUMP_PREFIX_OFFSET and 1-byte mode: + * 0009ab42: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @ABCDEFGHIJKLMNO + * Example output using %DUMP_PREFIX_ADDRESS and 4-byte mode: + * ffffffff88089af0: 73727170 77767574 7b7a7978 7f7e7d7c pqrstuvwxyz{|}~. + */ void print_hex_dump(const char *prefix_str, int prefix_type, int rowsize, int groupsize, const void *buf, size_t len, bool ascii); + +/** + * print_hex_dump_bytes - shorthand form of print_hex_dump() with default params + * @prefix_str: string to prefix each line with; + * caller supplies trailing spaces for alignment if desired + * @prefix_type: controls whether prefix of an offset, address, or none + * is printed (see enum dump_prefix_t) + * @buf: data blob to dump + * @len: number of bytes in the @buf + * + * Calls print_hex_dump(), rowsize of 16, groupsize of 1, + * and ASCII output included. + */ void print_hex_dump_bytes(const char *prefix_str, int prefix_type, const void *buf, size_t len); diff --git a/lib/hexdump.c b/lib/hexdump.c index a3f219a8741..e31784cc118 100644 --- a/lib/hexdump.c +++ b/lib/hexdump.c @@ -19,36 +19,6 @@ const char hex_asc[] = "0123456789abcdef"; const char hex_asc_upper[] = "0123456789ABCDEF"; #if CONFIG_IS_ENABLED(HEXDUMP) -/** - * hex_dump_to_buffer - convert a blob of data to "hex ASCII" in memory - * @buf: data blob to dump - * @len: number of bytes in the @buf - * @rowsize: number of bytes to print per line; must be 16 or 32 - * @groupsize: number of bytes to print at a time (1, 2, 4, 8; default = 1) - * @linebuf: where to put the converted data - * @linebuflen: total size of @linebuf, including space for terminating NUL - * @ascii: include ASCII after the hex output - * - * hex_dump_to_buffer() works on one "line" of output at a time, i.e., - * 16 or 32 bytes of input data converted to hex + ASCII output. - * - * Given a buffer of u8 data, hex_dump_to_buffer() converts the input data - * to a hex + ASCII dump at the supplied memory location. - * The converted output is always NUL-terminated. - * - * E.g.: - * hex_dump_to_buffer(frame->data, frame->len, 16, 1, - * linebuf, sizeof(linebuf), true); - * - * example output buffer: - * 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @ABCDEFGHIJKLMNO - * - * Return: - * The amount of bytes placed in the buffer without terminating NUL. If the - * output was truncated, then the return value is the number of bytes - * (excluding the terminating NUL) which would have been written to the final - * string if enough space had been available. - */ int hex_dump_to_buffer(const void *buf, size_t len, int rowsize, int groupsize, char *linebuf, size_t linebuflen, bool ascii) { @@ -150,35 +120,6 @@ overflow1: return ascii ? ascii_column + len : (groupsize * 2 + 1) * ngroups - 1; } -/** - * print_hex_dump - print a text hex dump to syslog for a binary blob of data - * @prefix_str: string to prefix each line with; - * caller supplies trailing spaces for alignment if desired - * @prefix_type: controls whether prefix of an offset, address, or none - * is printed (%DUMP_PREFIX_OFFSET, %DUMP_PREFIX_ADDRESS, %DUMP_PREFIX_NONE) - * @rowsize: number of bytes to print per line; must be 16 or 32 - * @groupsize: number of bytes to print at a time (1, 2, 4, 8; default = 1) - * @buf: data blob to dump - * @len: number of bytes in the @buf - * @ascii: include ASCII after the hex output - * - * Given a buffer of u8 data, print_hex_dump() prints a hex + ASCII dump - * to the stdio, with an optional leading prefix. - * - * print_hex_dump() works on one "line" of output at a time, i.e., - * 16 or 32 bytes of input data converted to hex + ASCII output. - * print_hex_dump() iterates over the entire input @buf, breaking it into - * "line size" chunks to format and print. - * - * E.g.: - * print_hex_dump("raw data: ", DUMP_PREFIX_ADDRESS, 16, 1, frame->data, - * frame->len, true); - * - * Example output using %DUMP_PREFIX_OFFSET and 1-byte mode: - * 0009ab42: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @ABCDEFGHIJKLMNO - * Example output using %DUMP_PREFIX_ADDRESS and 4-byte mode: - * ffffffff88089af0: 73727170 77767574 7b7a7978 7f7e7d7c pqrstuvwxyz{|}~. - */ void print_hex_dump(const char *prefix_str, int prefix_type, int rowsize, int groupsize, const void *buf, size_t len, bool ascii) { @@ -210,18 +151,6 @@ void print_hex_dump(const char *prefix_str, int prefix_type, int rowsize, } } -/** - * print_hex_dump_bytes - shorthand form of print_hex_dump() with default params - * @prefix_str: string to prefix each line with; - * caller supplies trailing spaces for alignment if desired - * @prefix_type: controls whether prefix of an offset, address, or none - * is printed (%DUMP_PREFIX_OFFSET, %DUMP_PREFIX_ADDRESS, %DUMP_PREFIX_NONE) - * @buf: data blob to dump - * @len: number of bytes in the @buf - * - * Calls print_hex_dump(), rowsize of 16, groupsize of 1, - * and ASCII output included. - */ void print_hex_dump_bytes(const char *prefix_str, int prefix_type, const void *buf, size_t len) { @@ -232,14 +161,13 @@ void print_hex_dump_bytes(const char *prefix_str, int prefix_type, * Some code in U-Boot copy-pasted from Linux kernel uses both * functions below so to keep stuff compilable we keep these stubs here. */ -void print_hex_dump(const char *prefix_str, int prefix_type, - int rowsize, int groupsize, const void *buf, - size_t len, bool ascii) +void print_hex_dump(const char *prefix_str, int prefix_type, int rowsize, + int groupsize, const void *buf, size_t len, bool ascii) { } void print_hex_dump_bytes(const char *prefix_str, int prefix_type, - const void *buf, size_t len) + const void *buf, size_t len) { } #endif /* CONFIG_HEXDUMP */ |