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block/vvfat.c: fix warnings with _FORTIFY_SOURCE 

CC    block/vvfat.o
cc1: warnings being treated as errors
block/vvfat.c: In function 'commit_one_file':
block/vvfat.c:2259: error: ignoring return value of 'ftruncate', declared with attribute warn_unused_result
make: *** [block/vvfat.o] Error 1
  CC    block/vvfat.o
In file included from /usr/include/stdio.h:912,
                 from ./qemu-common.h:19,
                 from block/vvfat.c:27:
In function 'snprintf',
    inlined from 'init_directories' at block/vvfat.c:871,
    inlined from 'vvfat_open' at block/vvfat.c:1068:
/usr/include/bits/stdio2.h:65: error: call to __builtin___snprintf_chk will always overflow destination buffer
make: *** [block/vvfat.o] Error 1

Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Kirill A. Shutemov 2010-01-20 00:56:14 +01:00 committed by Anthony Liguori
parent 1640366c35
commit 2dedf83ef0
1 changed files with 7 additions and 2 deletions
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9
block/vvfat.c
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@ -868,7 +868,8 @@ static int init_directories(BDRVVVFATState* s,
{
direntry_t* entry=array_get_next(&(s->directory));
entry->attributes=0x28; /* archive | volume label */
snprintf((char*)entry->name,11,"QEMU VVFAT");
memcpy(entry->name,"QEMU VVF",8);
memcpy(entry->extension,"AT ",3);
}
/* Now build FAT, and write back information into directory */
@ -2256,7 +2257,11 @@ static int commit_one_file(BDRVVVFATState* s,
c = c1;
}
ftruncate(fd, size);
if (ftruncate(fd, size)) {
perror("ftruncate()");
close(fd);
return -4;
}
close(fd);
return commit_mappings(s, first_cluster, dir_index);