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error checking in getfilesize

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This commit is contained in:
Anshul Maheshwari 2014-07-23 13:10:42 +05:30
parent 6b98856892
commit fb49e680a6
1 changed files with 11 additions and 4 deletions
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15
src/file_functions.c
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@ -9,10 +9,17 @@ LLONG buffered_read_opt_file (unsigned char *buffer, unsigned int bytes);
LLONG getfilesize (int in)
{
LLONG current=LSEEK (in, 0, SEEK_CUR);
LLONG length = LSEEK (in,0,SEEK_END);
LSEEK (in,current,SEEK_SET);
return length;
int ret = 0;
LLONG current=LSEEK (in, 0, SEEK_CUR);
LLONG length = LSEEK (in,0,SEEK_END);
if(current < 0 ||length < 0)
return -1;
ret = LSEEK (in,current,SEEK_SET);
if (ret < 0)
return -1;
return length;
}
LLONG gettotalfilessize (void) // -1 if one or more files failed to open