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vsprintf: Move function documentation into header file
Now that this is not in common.h, perhaps it is acceptable to move this documentation into the header file. Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
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046a37bd53
commit
71ec92b67c
2 changed files with 123 additions and 100 deletions
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@ -25,23 +25,146 @@
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#define __VSPRINTF_H
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ulong simple_strtoul(const char *cp, char **endp, unsigned int base);
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/**
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* strict_strtoul - convert a string to an unsigned long strictly
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* @param cp The string to be converted
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* @param base The number base to use
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* @param res The converted result value
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* @return 0 if conversion is successful and *res is set to the converted
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* value, otherwise it returns -EINVAL and *res is set to 0.
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*
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* strict_strtoul converts a string to an unsigned long only if the
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* string is really an unsigned long string, any string containing
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* any invalid char at the tail will be rejected and -EINVAL is returned,
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* only a newline char at the tail is acceptible because people generally
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* change a module parameter in the following way:
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*
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* echo 1024 > /sys/module/e1000/parameters/copybreak
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*
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* echo will append a newline to the tail.
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*
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* simple_strtoul just ignores the successive invalid characters and
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* return the converted value of prefix part of the string.
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*
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* Copied this function from Linux 2.6.38 commit ID:
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* 521cb40b0c44418a4fd36dc633f575813d59a43d
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*
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*/
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int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);
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unsigned long long simple_strtoull(const char *cp, char **endp,
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unsigned int base);
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long simple_strtol(const char *cp, char **endp, unsigned int base);
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void panic(const char *fmt, ...)
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__attribute__ ((format (__printf__, 1, 2), noreturn));
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/**
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* Format a string and place it in a buffer
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*
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* @param buf The buffer to place the result into
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* @param fmt The format string to use
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* @param ... Arguments for the format string
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*
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* The function returns the number of characters written
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* into @buf.
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int sprintf(char *buf, const char *fmt, ...)
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__attribute__ ((format (__printf__, 2, 3)));
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/**
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* Format a string and place it in a buffer (va_list version)
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param args Arguments for the format string
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* @return the number of characters which have been written into
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* the @buf not including the trailing '\0'. If @size is == 0 the function
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* returns 0.
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*
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* If you're not already dealing with a va_list consider using scnprintf().
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int vsprintf(char *buf, const char *fmt, va_list args);
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char *simple_itoa(ulong i);
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#ifdef CONFIG_SYS_VSNPRINTF
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/**
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* Format a string and place it in a buffer
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param ... Arguments for the format string
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* @return the number of characters which would be
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* generated for the given input, excluding the trailing null,
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* as per ISO C99. If the return is greater than or equal to
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* @size, the resulting string is truncated.
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int snprintf(char *buf, size_t size, const char *fmt, ...)
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__attribute__ ((format (__printf__, 3, 4)));
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/**
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* Format a string and place it in a buffer
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param ... Arguments for the format string
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*
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* The return value is the number of characters written into @buf not including
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* the trailing '\0'. If @size is == 0 the function returns 0.
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int scnprintf(char *buf, size_t size, const char *fmt, ...)
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__attribute__ ((format (__printf__, 3, 4)));
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/**
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* Format a string and place it in a buffer (base function)
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param args Arguments for the format string
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* @return The number characters which would be generated for the given
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* input, excluding the trailing '\0', as per ISO C99. Note that fewer
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* characters may be written if this number of characters is >= size.
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*
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* This function follows C99 vsnprintf, but has some extensions:
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* %pS output the name of a text symbol
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* %pF output the name of a function pointer
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* %pR output the address range in a struct resource
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*
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* The function returns the number of characters which would be
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* generated for the given input, excluding the trailing '\0',
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* as per ISO C99.
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*
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* Call this function if you are already dealing with a va_list.
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* You probably want snprintf() instead.
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*/
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int vsnprintf(char *buf, size_t size, const char *fmt, va_list args);
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/**
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* Format a string and place it in a buffer (va_list version)
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param args Arguments for the format string
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* @return the number of characters which have been written into
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* the @buf not including the trailing '\0'. If @size is == 0 the function
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* returns 0.
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*
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* If you're not already dealing with a va_list consider using scnprintf().
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
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#else
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/*
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100
lib/vsprintf.c
100
lib/vsprintf.c
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@ -67,32 +67,6 @@ unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base)
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return result;
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}
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/**
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* strict_strtoul - convert a string to an unsigned long strictly
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* @cp: The string to be converted
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* @base: The number base to use
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* @res: The converted result value
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*
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* strict_strtoul converts a string to an unsigned long only if the
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* string is really an unsigned long string, any string containing
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* any invalid char at the tail will be rejected and -EINVAL is returned,
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* only a newline char at the tail is acceptible because people generally
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* change a module parameter in the following way:
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*
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* echo 1024 > /sys/module/e1000/parameters/copybreak
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*
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* echo will append a newline to the tail.
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*
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* It returns 0 if conversion is successful and *res is set to the converted
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* value, otherwise it returns -EINVAL and *res is set to 0.
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*
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* simple_strtoul just ignores the successive invalid characters and
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* return the converted value of prefix part of the string.
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*
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* Copied this function from Linux 2.6.38 commit ID:
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* 521cb40b0c44418a4fd36dc633f575813d59a43d
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*
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*/
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int strict_strtoul(const char *cp, unsigned int base, unsigned long *res)
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{
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char *tail;
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@ -540,25 +514,6 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr,
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precision, flags);
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}
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/**
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* Format a string and place it in a buffer (base function)
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param args Arguments for the format string
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* @return The number characters which would be generated for the given
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* input, excluding the trailing '\0', as per ISO C99. Note that fewer
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* characters may be written if this number of characters is >= size.
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*
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* This function follows C99 vsnprintf, but has some extensions:
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* %pS output the name of a text symbol
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* %pF output the name of a function pointer
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* %pR output the address range in a struct resource
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*
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* Call this function if you are already dealing with a va_list.
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* You probably want snprintf() instead.
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*/
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static int vsnprintf_internal(char *buf, size_t size, const char *fmt,
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va_list args)
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{
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@ -755,21 +710,6 @@ int vsnprintf(char *buf, size_t size, const char *fmt,
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return vsnprintf_internal(buf, size, fmt, args);
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}
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/**
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* Format a string and place it in a buffer (va_list version)
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param args Arguments for the format string
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* @return the number of characters which have been written into
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* the @buf not including the trailing '\0'. If @size is == 0 the function
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* returns 0.
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*
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* If you're not already dealing with a va_list consider using scnprintf().
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
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{
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int i;
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@ -783,20 +723,6 @@ int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
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return 0;
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}
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/**
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* Format a string and place it in a buffer
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param ... Arguments for the format string
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* @return the number of characters which would be
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* generated for the given input, excluding the trailing null,
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* as per ISO C99. If the return is greater than or equal to
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* @size, the resulting string is truncated.
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int snprintf(char *buf, size_t size, const char *fmt, ...)
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{
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va_list args;
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@ -809,20 +735,6 @@ int snprintf(char *buf, size_t size, const char *fmt, ...)
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return i;
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}
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/**
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* Format a string and place it in a buffer
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*
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* @param buf The buffer to place the result into
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* @param size The size of the buffer, including the trailing null space
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* @param fmt The format string to use
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* @param ... Arguments for the format string
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*
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* The return value is the number of characters written into @buf not including
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* the trailing '\0'. If @size is == 0 the function returns 0.
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int scnprintf(char *buf, size_t size, const char *fmt, ...)
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{
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va_list args;
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@ -854,18 +766,6 @@ int vsprintf(char *buf, const char *fmt, va_list args)
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return vsnprintf_internal(buf, INT_MAX, fmt, args);
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}
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/**
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* Format a string and place it in a buffer
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*
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* @param buf The buffer to place the result into
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* @param fmt The format string to use
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* @param ... Arguments for the format string
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*
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* The function returns the number of characters written
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* into @buf.
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*
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* See the vsprintf() documentation for format string extensions over C99.
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*/
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int sprintf(char * buf, const char *fmt, ...)
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{
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va_list args;
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