static int chips_trunc(int argc, char **argv)
{
if(argc < 2 || argc > 3)
{
fprintf(stderr, "Usage: %s <file> [size]\n", argv[0]);
return -1;
}
int size = 0;
if(argc == 3)
{
char *end;
size = strtol(argv[2], &end, 0);
if(*end != 0 || size < 0)
{
fprintf(stderr, "Not a nonnegative integer: %s\n", argv[2]);
return -1;
}
}
if(!fs_truncate(argv[1], size))
{
fprintf(stderr, "Truncating %s failed.\n", argv[1]);
return 1;
}
return 0;
}
/*
* Change the size of an open file. Very similar to fs_truncate (and,
* depending on your implementation), you could possibly treat it the
* same as fs_truncate.
*/
int fs_ftruncate(const char *path, off_t offset, struct fuse_file_info *fi) {
fprintf(stderr, "fs_ftruncate(path=\"%s\", offset=%d)\n", path, (int)offset);
s3context_t *ctx = GET_PRIVATE_DATA;
int err = NULL;
if((err=fs_truncate(path, offset))!=0) {
fprintf(stderr, "error truncating path: fs_ftruncate\n");
return -errno;
}
return 0;
}
/*
trunc command
*/
LOCAL void cmd_trunc(INT ac, B *av[])
{
ER er;
INT len;
if (ac < 3) return;
len = strtol(av[2], NULL, 0);
er = fs_truncate(av[1], len);
if (er >= E_OK) {
P("'%s' is truncated to %d\n", av[1], len);
} else {
P("fs_truncate(%s, %d) ERR [%#x]\n", av[1], len, er);
}
}
int16_t
parse_cmd_fs_truncate (char *cmd, char *output, uint16_t len)
{
/* Ignore leading spaces. */
while (* cmd == ' ') cmd ++;
char *ptr = strchr (cmd, ' ');
if (ptr == NULL) return ECMD_ERR_PARSE_ERROR; /* invalid args. */
*(ptr ++) = 0; /* Zero terminate filename. */
fs_inode_t i = fs_get_inode (&fs, cmd);
if (i == 0xffff)
return ECMD_FINAL(snprintf_P(output, len, PSTR("no such file.")));
fs_status_t ret = fs_truncate (&fs, i, strtoul (ptr, NULL, 10));
return (ret == FS_OK) ? ECMD_FINAL_OK : ECMD_ERR_PARSE_ERROR;
}
static int chips_truncate(const char *path, off_t offset)
{
return fs_truncate((char *)path, offset) ? 0 : -1;
}
