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glibc/io/tst-posix_fallocate.c
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#include <fcntl.h> | |
#include <sys/stat.h> | |
static void do_prepare (void); | |
#define PREPARE(argc, argv) do_prepare () | |
static int do_test (void); | |
#define TEST_FUNCTION do_test () | |
#include <test-skeleton.c> | |
static int fd; | |
static void | |
do_prepare (void) | |
{ | |
fd = create_temp_file ("tst-posix_fallocate.", NULL); | |
if (fd == -1) | |
{ | |
printf ("cannot create temporary file: %m\n"); | |
exit (1); | |
} | |
} | |
static int | |
do_test (void) | |
{ | |
struct stat64 st; | |
if (fstat64 (fd, &st) != 0) | |
{ | |
puts ("1st fstat failed"); | |
return 1; | |
} | |
if (st.st_size != 0) | |
{ | |
puts ("file not created with size 0"); | |
return 1; | |
} | |
if (posix_fallocate (fd, 512, 768) != 0) | |
{ | |
puts ("1st posix_fallocate call failed"); | |
return 1; | |
} | |
if (fstat64 (fd, &st) != 0) | |
{ | |
puts ("2nd fstat failed"); | |
return 1; | |
} | |
if (st.st_size != 512 + 768) | |
{ | |
printf ("file size after first posix_fallocate call is %llu, expected %u\n", | |
(unsigned long long int) st.st_size, 512u + 768u); | |
return 1; | |
} | |
if (posix_fallocate (fd, 0, 1024) != 0) | |
{ | |
puts ("2nd posix_fallocate call failed"); | |
return 1; | |
} | |
if (fstat64 (fd, &st) != 0) | |
{ | |
puts ("3rd fstat failed"); | |
return 1; | |
} | |
if (st.st_size != 512 + 768) | |
{ | |
puts ("file size changed in second posix_fallocate"); | |
return 1; | |
} | |
if (posix_fallocate (fd, 2048, 64) != 0) | |
{ | |
puts ("3rd posix_fallocate call failed"); | |
return 1; | |
} | |
if (fstat64 (fd, &st) != 0) | |
{ | |
puts ("4th fstat failed"); | |
return 1; | |
} | |
if (st.st_size != 2048 + 64) | |
{ | |
printf ("file size after first posix_fallocate call is %llu, expected %u\n", | |
(unsigned long long int) st.st_size, 2048u + 64u); | |
return 1; | |
} | |
close (fd); | |
return 0; | |
} |