read() wont allow me to read files larger than 2 gig (on a 64bit)
Hi the following c-code utilizing the 'read()' man 2 read method cant read in files larger that 2gig.
Hi I've found a strange problem on ubuntu64bit, that limits the data you are allowed to allocate on a 64bit platform using the c function 'read()'
The following program wont allow to allocate more that 2.1gig memory.
And LONG_MAX is defined in /usr/include/limits.h as
# if __WORDSIZE == 64
# define LONG_MAX 9223372036854775807L
# else
# define LONG_MAX 2147483647L
# endif
# define LONG_MIN (-LONG_MAX - 1L)
Either this is a bug in the ubuntu buildsystem,
or my build system is broken.
Can anyone with a 64 try to run the above program.
ssize_t largest 32 bit value is ~2.1GB, which you seem to know. I had ubuntu about several years ago, and there was a largefile option you had to enable:
ssize_t largest 32 bit value is ~2.1GB, which you seem to know. I had ubuntu about several years ago, and there was a largefile option you had to enable:
Is that necessary even with a 64-bit compile in Ubuntu? The OP's "readelf" output, and the results of his LONG_MAX output show he's running a 64-bit binary.
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