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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /include/linux/utsname.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/linux/utsname.h')
-rw-r--r-- | include/linux/utsname.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/include/linux/utsname.h b/include/linux/utsname.h new file mode 100644 index 000000000..bf7613ba4 --- /dev/null +++ b/include/linux/utsname.h @@ -0,0 +1,92 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_UTSNAME_H +#define _LINUX_UTSNAME_H + + +#include <linux/sched.h> +#include <linux/nsproxy.h> +#include <linux/ns_common.h> +#include <linux/err.h> +#include <uapi/linux/utsname.h> + +enum uts_proc { + UTS_PROC_ARCH, + UTS_PROC_OSTYPE, + UTS_PROC_OSRELEASE, + UTS_PROC_VERSION, + UTS_PROC_HOSTNAME, + UTS_PROC_DOMAINNAME, +}; + +struct user_namespace; +extern struct user_namespace init_user_ns; + +struct uts_namespace { + struct new_utsname name; + struct user_namespace *user_ns; + struct ucounts *ucounts; + struct ns_common ns; +} __randomize_layout; +extern struct uts_namespace init_uts_ns; + +#ifdef CONFIG_UTS_NS +static inline void get_uts_ns(struct uts_namespace *ns) +{ + refcount_inc(&ns->ns.count); +} + +extern struct uts_namespace *copy_utsname(unsigned long flags, + struct user_namespace *user_ns, struct uts_namespace *old_ns); +extern void free_uts_ns(struct uts_namespace *ns); + +static inline void put_uts_ns(struct uts_namespace *ns) +{ + if (refcount_dec_and_test(&ns->ns.count)) + free_uts_ns(ns); +} + +void uts_ns_init(void); +#else +static inline void get_uts_ns(struct uts_namespace *ns) +{ +} + +static inline void put_uts_ns(struct uts_namespace *ns) +{ +} + +static inline struct uts_namespace *copy_utsname(unsigned long flags, + struct user_namespace *user_ns, struct uts_namespace *old_ns) +{ + if (flags & CLONE_NEWUTS) + return ERR_PTR(-EINVAL); + + return old_ns; +} + +static inline void uts_ns_init(void) +{ +} +#endif + +#ifdef CONFIG_PROC_SYSCTL +extern void uts_proc_notify(enum uts_proc proc); +#else +static inline void uts_proc_notify(enum uts_proc proc) +{ +} +#endif + +static inline struct new_utsname *utsname(void) +{ + return ¤t->nsproxy->uts_ns->name; +} + +static inline struct new_utsname *init_utsname(void) +{ + return &init_uts_ns.name; +} + +extern struct rw_semaphore uts_sem; + +#endif /* _LINUX_UTSNAME_H */ |