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How do I decrease the file size?

I have increased the file size with
lseek(fd, size, SEEK_SET);
write(fd,"",1);

Now, how would I decrease the same file?

Hi,

anyone knows if mremap round off the new_memory parameter or it has to be done manually?

Hi,

I need to mmap a file so that I can grow and shrink it as needed. In addition to using mremap, the actual file size needs to be modified as well. I do not know how to change the file size, but...