All,
First of all, I apologize if this topic has been discussed already,
but I did my best to try to find references to similar issues, with no
luck.
The problem: I have a test application that behaves differently when I
run it on my Mac vs. Linux. The test application simply open a file
with attributes O_WRONLY | O_CREAT, then write a string "Hello World',
then call again another write() this time with "Merry Christmas", then
finally close the file.
On Mac I see two callbacks to write (correct here...): the first one
for a buffer containing "Hello World\0", the second time, for a buffer
containing "Hello World\0Merry Christmas\0" (this doesn't seem to be
right...).
When I run the same test on Linux the write() calls are correct: the
first one for the buffer "Hello World\0", the second one for the
buffer "Merry Christmas\0".
Is this something related to OSX? Why isn't working on Mac?
Any idea?
Notes:
I have tested this behavior with the 'fusexmp_fh' example that comes
with the original Fuse distribution. The fusexmp_fh is a simple
wrapper to access the filesystem from your fuse mounted directory.
The test application source code is here:
------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <string.h>
#include <fcntl.h>
const char * const string1 = "Hello world";
const char * const string2 = "Merry Christmas";
int main() {
int f;
const size_t string1Len = strlen(string1) + 1;
const size_t string2Len = strlen(string2) + 1;
printf("Press ENTER to open...\n");
getchar();
f = open("/mnt/fuse/tmp/foo", O_WRONLY | O_CREAT);
if (f == -1) {
perror("Cannot open data writer");
return -1;
}
printf("Press ENTER to write the first string...\n"); getchar
();
if (write(f, string1, string1Len) != string1Len) {
perror("write error (1)");
return -1;
}
printf("Press ENTER to write the second string...\n"); getchar
();
if (write(f, string2, string2Len) != string2Len) {
perror("write error (2)");
return -1;
}
printf("Press ENTER to close\n"); getchar();
close(f);
return 0;
}
---------------------------------------------------------------
Thanks in advance!
Fabrizio
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