mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

vpc: fix a file descriptor leak

Browse Source 
Fix a file descriptor leak, reported by cppcheck:
[/src/qemu/block/vpc.c:524]: (error) Resource leak: fd

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Blue Swirl 2011-01-12 19:49:00 +00:00
parent 1afec9138f
commit f0ff243a16
1 changed files with 30 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
block/vpc.c
View File

@ -502,6 +502,7 @@ static int vpc_create(const char *filename, QEMUOptionParameter *options)
uint8_t secs_per_cyl = 0;
size_t block_size, num_bat_entries;
int64_t total_sectors = 0;
int ret = -EIO;
// Read out options
while (options && options->name) {
@ -521,7 +522,8 @@ static int vpc_create(const char *filename, QEMUOptionParameter *options)
for (i = 0; total_sectors > (int64_t)cyls * heads * secs_per_cyl; i++) {
if (calculate_geometry(total_sectors + i,
&cyls, &heads, &secs_per_cyl)) {
return -EFBIG;
ret = -EFBIG;
goto fail;
}
}
total_sectors = (int64_t) cyls * heads * secs_per_cyl;
@ -560,22 +562,28 @@ static int vpc_create(const char *filename, QEMUOptionParameter *options)
block_size = 0x200000;
num_bat_entries = (total_sectors + block_size / 512) / (block_size / 512);
if (write(fd, buf, HEADER_SIZE) != HEADER_SIZE)
return -EIO;
if (write(fd, buf, HEADER_SIZE) != HEADER_SIZE) {
goto fail;
}
if (lseek(fd, 1536 + ((num_bat_entries * 4 + 511) & ~511), SEEK_SET) < 0)
return -EIO;
if (write(fd, buf, HEADER_SIZE) != HEADER_SIZE)
return -EIO;
if (lseek(fd, 1536 + ((num_bat_entries * 4 + 511) & ~511), SEEK_SET) < 0) {
goto fail;
}
if (write(fd, buf, HEADER_SIZE) != HEADER_SIZE) {
goto fail;
}
// Write the initial BAT
if (lseek(fd, 3 * 512, SEEK_SET) < 0)
return -EIO;
if (lseek(fd, 3 * 512, SEEK_SET) < 0) {
goto fail;
}
memset(buf, 0xFF, 512);
for (i = 0; i < (num_bat_entries * 4 + 511) / 512; i++)
if (write(fd, buf, 512) != 512)
return -EIO;
for (i = 0; i < (num_bat_entries * 4 + 511) / 512; i++) {
if (write(fd, buf, 512) != 512) {
goto fail;
}
}
// Prepare the Dynamic Disk Header
@ -592,13 +600,18 @@ static int vpc_create(const char *filename, QEMUOptionParameter *options)
dyndisk_header->checksum = be32_to_cpu(vpc_checksum(buf, 1024));
// Write the header
if (lseek(fd, 512, SEEK_SET) < 0)
return -EIO;
if (write(fd, buf, 1024) != 1024)
return -EIO;
if (lseek(fd, 512, SEEK_SET) < 0) {
goto fail;
}
if (write(fd, buf, 1024) != 1024) {
goto fail;
}
ret = 0;
fail:
close(fd);
return 0;
return ret;
}
static void vpc_close(BlockDriverState *bs)