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From: Arvind Sankar <nivedita@alum.mit.edu>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: linux-efi@vger.kernel.org
Subject: [PATCH 09/24] efi/printf: Fix minor bug in precision handling
Date: Mon, 18 May 2020 15:07:01 -0400	[thread overview]
Message-ID: <20200518190716.751506-10-nivedita@alum.mit.edu> (raw)
In-Reply-To: <20200518190716.751506-1-nivedita@alum.mit.edu>

A negative precision should be ignored completely, and the presence of a
valid precision should turn off the 0 flag.

Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
---
 drivers/firmware/efi/libstub/vsprintf.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/firmware/efi/libstub/vsprintf.c b/drivers/firmware/efi/libstub/vsprintf.c
index b3ed4af77af5..d7938e44f067 100644
--- a/drivers/firmware/efi/libstub/vsprintf.c
+++ b/drivers/firmware/efi/libstub/vsprintf.c
@@ -278,9 +278,10 @@ int vsprintf(char *buf, const char *fmt, va_list args)
 				++fmt;
 				/* it's the next argument */
 				precision = va_arg(args, int);
-			}
-			if (precision < 0)
+			} else
 				precision = 0;
+			if (precision >= 0)
+				flags &= ~ZEROPAD;
 		}
 
 		/* get the conversion qualifier */
-- 
2.26.2


  parent reply	other threads:[~2020-05-18 19:07 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-18 19:06 [PATCH 00/24] efi/libstub: Add printf implementation Arvind Sankar
2020-05-18 19:06 ` [PATCH 01/24] efi/libstub: Include dependencies of efistub.h Arvind Sankar
2020-05-18 19:06 ` [PATCH 02/24] efi/libstub: Rename efi_[char16_]printk to efi_[char16_]puts Arvind Sankar
2020-05-18 19:06 ` [PATCH 03/24] efi/libstub: Buffer output of efi_puts Arvind Sankar
2020-05-18 19:06 ` [PATCH 04/24] efi/libstub: Add a basic printf implementation Arvind Sankar
2020-05-18 19:06 ` [PATCH 05/24] efi/libstub: Optimize for size instead of speed Arvind Sankar
2020-06-05  0:31   ` Andrey Ignatov
2020-06-05  6:33     ` Ard Biesheuvel
2020-06-05 13:14       ` Arvind Sankar
2020-06-05 13:32         ` Arvind Sankar
2020-06-05 14:53           ` Ard Biesheuvel
2020-06-05 15:10             ` Arvind Sankar
2020-06-05 15:11               ` Ard Biesheuvel
2020-06-05 15:06           ` [PATCH] efi/x86: Fix build with gcc 4 Arvind Sankar
2020-06-05 16:09             ` Andrey Ignatov
2020-06-15  9:43               ` Ard Biesheuvel
2020-05-18 19:06 ` [PATCH 06/24] efi/printf: Drop %n format and L qualifier Arvind Sankar
2020-05-18 19:06 ` [PATCH 07/24] efi/printf: Add 64-bit and 8-bit integer support Arvind Sankar
2020-05-18 19:07 ` [PATCH 08/24] efi/printf: Factor out flags parsing and handle '%' earlier Arvind Sankar
2020-05-18 19:07 ` Arvind Sankar [this message]
2020-05-18 19:07 ` [PATCH 10/24] efi/printf: Merge 'p' with the integer formats Arvind Sankar
2020-05-18 19:07 ` [PATCH 11/24] efi/printf: Factor out width/precision parsing Arvind Sankar
2020-05-18 19:07 ` [PATCH 12/24] efi/printf: Factor out integer argument retrieval Arvind Sankar
2020-05-18 19:07 ` [PATCH 13/24] efi/printf: Handle null string input Arvind Sankar
2020-05-18 19:07 ` [PATCH 14/24] efi/printf: Refactor code to consolidate padding and output Arvind Sankar
2020-05-18 19:07 ` [PATCH 15/24] efi/printf: Abort on invalid format Arvind Sankar
2020-05-18 19:07 ` [PATCH 16/24] efi/printf: Turn vsprintf into vsnprintf Arvind Sankar
2020-05-18 19:07 ` [PATCH 17/24] efi/libstub: Implement printk-style logging Arvind Sankar
2020-05-19  8:22   ` Ard Biesheuvel
2020-05-19 15:07     ` Arvind Sankar
2020-05-20 16:38       ` Arvind Sankar
2020-05-20 16:38         ` Ard Biesheuvel
2020-05-20 17:02           ` Arvind Sankar
2020-05-20 17:09             ` Ard Biesheuvel
2020-05-18 19:07 ` [PATCH 18/24] efi/libstub: Add definitions for console input and events Arvind Sankar
2020-05-18 19:07 ` [PATCH 19/24] efi/gop: Add an option to list out the available GOP modes Arvind Sankar
2020-05-18 19:07 ` [PATCH 20/24] efi/printf: Add support for wchar_t (UTF-16) Arvind Sankar
2020-05-18 19:07 ` [PATCH 21/24] efi/libstub: Add UTF-8 decoding to efi_puts Arvind Sankar
2020-05-18 19:07 ` [PATCH 22/24] efi/libstub: Use %ls for filename Arvind Sankar
2020-05-18 19:07 ` [PATCH 23/24] efi/libstub: Get the exact UTF-8 length Arvind Sankar
2020-05-18 19:07 ` [PATCH 24/24] efi/libstub: Use snprintf with %ls to convert the command line Arvind Sankar
2020-05-19  7:53 ` [PATCH 00/24] efi/libstub: Add printf implementation Ard Biesheuvel
2020-05-19 15:06   ` Arvind Sankar
2020-05-19 16:44     ` Ard Biesheuvel
2020-05-21  0:29       ` [PATCH] efi/libstub: Don't parse overlong command lines Arvind Sankar
2020-05-22 13:13         ` Ard Biesheuvel

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