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d_path: "\0" is {0,0}, not {0}

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Single-element array consisting of one NUL is spelled ""...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2021-05-17 21:11:45 -04:00
parent 6efb943b86
commit dfe5087675
1 changed files with 5 additions and 5 deletions
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10
fs/d_path.c
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@ -184,7 +184,7 @@ char *__d_path(const struct path *path,
char *res = buf + buflen; char *res = buf + buflen;
int error; int error;
prepend(&res, &buflen, "\0", 1); prepend(&res, &buflen, "", 1);
error = prepend_path(path, root, &res, &buflen); error = prepend_path(path, root, &res, &buflen);
if (error < 0) if (error < 0)
@ -201,7 +201,7 @@ char *d_absolute_path(const struct path *path,
char *res = buf + buflen; char *res = buf + buflen;
int error; int error;
prepend(&res, &buflen, "\0", 1); prepend(&res, &buflen, "", 1);
error = prepend_path(path, &root, &res, &buflen); error = prepend_path(path, &root, &res, &buflen);
if (error > 1) if (error > 1)
@ -218,7 +218,7 @@ static int path_with_deleted(const struct path *path,
const struct path *root, const struct path *root,
char **buf, int *buflen) char **buf, int *buflen)
{ {
prepend(buf, buflen, "\0", 1); prepend(buf, buflen, "", 1);
if (d_unlinked(path->dentry)) { if (d_unlinked(path->dentry)) {
int error = prepend(buf, buflen, " (deleted)", 10); int error = prepend(buf, buflen, " (deleted)", 10);
if (error) if (error)
@ -341,7 +341,7 @@ restart:
dentry = d; dentry = d;
end = buf + buflen; end = buf + buflen;
len = buflen; len = buflen;
prepend(&end, &len, "\0", 1); prepend(&end, &len, "", 1);
/* Get '/' right */ /* Get '/' right */
retval = end-1; retval = end-1;
*retval = '/'; *retval = '/';
@ -444,7 +444,7 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size)
char *cwd = page + PATH_MAX; char *cwd = page + PATH_MAX;
int buflen = PATH_MAX; int buflen = PATH_MAX;
prepend(&cwd, &buflen, "\0", 1); prepend(&cwd, &buflen, "", 1);
error = prepend_path(&pwd, &root, &cwd, &buflen); error = prepend_path(&pwd, &root, &cwd, &buflen);
rcu_read_unlock(); rcu_read_unlock();