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lib/vsprintf: Improve vsprintf + sprintf function comments

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Clarify that the return values of vsprintf() and sprintf() exclude the
trailing NUL character.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20251103090913.2066-2-thorsten.blum@linux.dev
Signed-off-by: Petr Mladek <pmladek@suse.com>
This commit is contained in:
Thorsten Blum
2025-11-03 10:09:13 +01:00
committed by Petr Mladek
parent 67e1b0052f
commit 2e44874814
1 changed files with 4 additions and 4 deletions
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8
lib/vsprintf.c
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@@ -3054,8 +3054,8 @@ EXPORT_SYMBOL(scnprintf);
* @fmt: The format string to use
* @args: Arguments for the format string
*
* The function returns the number of characters written
* into @buf. Use vsnprintf() or vscnprintf() in order to avoid
* The return value is the number of characters written into @buf not including
* the trailing '\0'. Use vsnprintf() or vscnprintf() in order to avoid
* buffer overflows.
*
* If you're not already dealing with a va_list consider using sprintf().
@@ -3074,8 +3074,8 @@ EXPORT_SYMBOL(vsprintf);
* @fmt: The format string to use
* @...: Arguments for the format string
*
* The function returns the number of characters written
* into @buf. Use snprintf() or scnprintf() in order to avoid
* The return value is the number of characters written into @buf not including
* the trailing '\0'. Use snprintf() or scnprintf() in order to avoid
* buffer overflows.
*
* See the vsnprintf() documentation for format string extensions over C99.