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Merged
smcv merged 3 commits into from
Sep 7, 2026
+13 −1
Merged

Build on older systems #786

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cecea8a
utils: Build with older compilers that do not default to C99 or newer
ao2 Sep 7, 2026
d6be2cf
utils: Fix compilation warnings about -Wunused-parameter
ao2 Sep 7, 2026
a6ebe83
utils: Make sure __u64 is defined when declaring mount_attr fallback
ao2 Sep 7, 2026
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7 changes: 7 additions & 0 deletions utils.c
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Original file line number Diff line number Diff line change
Expand Up @@ -903,6 +903,8 @@ pivot_root (const char * new_root, const char * put_old)
#ifdef __NR_pivot_root
return syscall (__NR_pivot_root, new_root, put_old);
#else
(void) new_root;
(void) put_old;
errno = ENOSYS;
return -1;
#endif
Expand Down Expand Up @@ -1104,6 +1106,11 @@ mount_setattr_wrapper (int dirfd, const char *path, unsigned int flags,
#ifdef __NR_mount_setattr
return syscall (__NR_mount_setattr, dirfd, path, flags, attr, size);
#else
(void) dirfd;
(void) path;
(void) flags;
(void) attr;
(void) size;
errno = ENOSYS;
return -1;
#endif
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7 changes: 6 additions & 1 deletion utils.h
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Original file line number Diff line number Diff line change
Expand Up @@ -255,7 +255,9 @@ fdset_add (FdSet *set, int fd)
static inline void
cleanup_fdsetp (FdSet *set)
{
for (size_t i = 0; i < set->len; i++)
size_t i;

for (i = 0; i < set->len; i++)
if (set->fds[i] >= 0)
close (set->fds[i]);
free (set->fds);
Expand Down Expand Up @@ -287,6 +289,9 @@ void strappend_escape_for_mount_options (StringBuilder *dest,
const char *src);

#ifndef MOUNT_ATTR_RDONLY

#include <linux/types.h>

struct mount_attr
{
__u64 attr_set;
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