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From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: barebox@lists.infradead.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Subject: [PATCH 12/17] state: Fix lseek error check in state_backend_bucket_direct_read()
Date: Wed,  6 Mar 2019 23:49:21 -0800	[thread overview]
Message-ID: <20190307074926.20539-13-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20190307074926.20539-1-andrew.smirnov@gmail.com>

Don't use 'int' to store lseek()'s return value to avoid problems with
large seek offsets. While at it, make sure to populate return error
code from 'errno'.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
 common/state/backend_bucket_direct.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/common/state/backend_bucket_direct.c b/common/state/backend_bucket_direct.c
index 1f00b0fb2..152431214 100644
--- a/common/state/backend_bucket_direct.c
+++ b/common/state/backend_bucket_direct.c
@@ -56,10 +56,9 @@ static int state_backend_bucket_direct_read(struct state_backend_storage_bucket
 	void *buf;
 	int ret;
 
-	ret = lseek(direct->fd, direct->offset, SEEK_SET);
-	if (ret < 0) {
-		dev_err(direct->dev, "Failed to seek file, %d\n", ret);
-		return ret;
+	if (lseek(direct->fd, direct->offset, SEEK_SET) != direct->offset) {
+		dev_err(direct->dev, "Failed to seek file, %d\n", -errno);
+		return -errno;
 	}
 	ret = read_full(direct->fd, &meta, sizeof(meta));
 	if (ret < 0) {
@@ -77,10 +76,11 @@ static int state_backend_bucket_direct_read(struct state_backend_storage_bucket
 			return -EINVAL;
 		}
 		read_len = direct->max_size;
-		ret = lseek(direct->fd, direct->offset, SEEK_SET);
-		if (ret < 0) {
-			dev_err(direct->dev, "Failed to seek file, %d\n", ret);
-			return ret;
+		if (lseek(direct->fd, direct->offset, SEEK_SET) !=
+		    direct->offset) {
+			dev_err(direct->dev, "Failed to seek file, %d\n",
+				-errno);
+			return -errno;
 		}
 	}
 
-- 
2.20.1


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  parent reply	other threads:[~2019-03-07  7:49 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-07  7:49 [PATCH 00/17] lseek related fixes Andrey Smirnov
2019-03-07  7:49 ` [PATCH 01/17] libfile: Make failure path of open_and_lseek() consistent Andrey Smirnov
2019-03-07  7:49 ` [PATCH 02/17] common: Always return enum filetype in file_name_detect_type_offset() Andrey Smirnov
2019-03-07  7:49 ` [PATCH 03/17] MIPS: ath79: Use errno to get error code from open_and_lseek() Andrey Smirnov
2019-03-07  7:49 ` [PATCH 04/17] ARM: i.MX: bbu: Fix variable type in imx_bbu_external_nand_update() Andrey Smirnov
2019-03-07  7:49 ` [PATCH 05/17] ARM: i.MX: bbu: Fix lseek error check " Andrey Smirnov
2019-03-07  7:49 ` [PATCH 06/17] ARM: i.MX: bbu: Fix lseek error check in imx_bbu_internal_v2_write_nand_dbbt() Andrey Smirnov
2019-03-07  7:49 ` [PATCH 07/17] ARM: i.MX: bbu: Fix variable type " Andrey Smirnov
2019-03-07  7:49 ` [PATCH 08/17] bpkfs: Fix lseek error check in bpkfs_probe() Andrey Smirnov
2019-03-07  7:49 ` [PATCH 09/17] uimage: Fix lseek error check in uimage_verify() Andrey Smirnov
2019-03-07  7:49 ` [PATCH 10/17] uimage: Fix lseek error check in uimage_load() Andrey Smirnov
2019-03-07  7:49 ` [PATCH 11/17] uimage: Fix lseek error check in uimage_load_to_buf() Andrey Smirnov
2019-03-07  7:49 ` Andrey Smirnov [this message]
2019-03-07  7:49 ` [PATCH 13/17] state: Fix lseek error check in state_backend_bucket_direct_write() Andrey Smirnov
2019-03-07  7:49 ` [PATCH 14/17] state: Fix lseek error check in state_mtd_peb_read() Andrey Smirnov
2019-03-07  7:49 ` [PATCH 15/17] state: Fix lseek error check in state_mtd_peb_write() Andrey Smirnov
2019-03-07  7:49 ` [PATCH 16/17] commands: loadxy: Make use of open_and_lseek() Andrey Smirnov
2019-03-07  7:49 ` [PATCH 17/17] commands: loadb: " Andrey Smirnov
2019-03-11  6:56 ` [PATCH 00/17] lseek related fixes Sascha Hauer

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