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cases
handle empty filename, dot and dotdot. handle mismatching from/to directory/file
type. cleanup destination file on error. error when attempting to copy non-empty
directories.
little test program:
#include <unistd.h>
#include <stdio.h>
int
main(int argc, char *argv[])
{
if(argc != 3){
fprintf(stderr, "usage: %s old new\n", argv[0]);
return 1;
}
if(rename(argv[1], argv[2])){
perror("rename");
return 1;
}
return 0;
}
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new implementation gets stuck in a infinite loop. backing
this out for now.
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For ape, we never enabled warnings in cflags.
Turning it on brings up a lot of warnings. Most are noise,
but a few caught unused variables and trunctaions of pointers.
to smaller integers (int, long).
A few warnings remain.
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_grpmems() was broken tokenizing group list in place.
we have to copy it to status buffer before tokenizing.
dynamically alloc path for test file to check write
permission on directory and add pid to the name to
prevent races.
use _OPEN instead of ape open to read /dev/ppid in
getppid().
use mode enums instead of numeric constants for _OPEN()
and _CREATE().
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