13665439908

Committed 04 Mar 2025 09:54PM UTC coverage: 71.855% (+0.04%) from 71.819%

Build # 13665439908

Build Type

push

github

Committed by

poettering

Commit Message

dirent-util: add several assertions in posix_getdents()

Follow-up for e86a492ff.

Coverage Stats

4 of 4 new or added lines in 1 file covered. (100.0%)

8029 existing lines in 84 files now uncovered.

294783 of 410245 relevant lines covered (71.86%)

717882.44 hits per line

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87.5

/src/basic/missing_syscall.h

/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once

/* Missing glibc definitions to access certain kernel APIs */

#include <errno.h>
#include <linux/time_types.h>
#include <signal.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

#ifdef ARCH_MIPS
#include <asm/sgidefs.h>
#endif

#include "macro.h"
#include "missing_keyctl.h"
#include "missing_sched.h"
#include "missing_syscall_def.h"

/* ======================================================================= */

#if !HAVE_FCHMODAT2
/* since kernel v6.6 (78252deb023cf0879256fcfbafe37022c390762b) */
static inline int missing_fchmodat2(int dirfd, const char *path, mode_t mode, int flags) {
        return syscall(__NR_fchmodat2, dirfd, path, mode, flags);
}

#  define fchmodat2 missing_fchmodat2
#endif

/* ======================================================================= */

#if !HAVE_PIVOT_ROOT
static inline int missing_pivot_root(const char *new_root, const char *put_old) {
        return syscall(__NR_pivot_root, new_root, put_old);
}

#  define pivot_root missing_pivot_root
#endif

/* ======================================================================= */

#if !HAVE_IOPRIO_GET
static inline int missing_ioprio_get(int which, int who) {
        return syscall(__NR_ioprio_get, which, who);
}

#  define ioprio_get missing_ioprio_get
#endif

/* ======================================================================= */

#if !HAVE_IOPRIO_SET
static inline int missing_ioprio_set(int which, int who, int ioprio) {
        return syscall(__NR_ioprio_set, which, who, ioprio);
}

#  define ioprio_set missing_ioprio_set
#endif

/* ======================================================================= */

static inline pid_t raw_getpid(void) {
#if defined(__alpha__)
        return (pid_t) syscall(__NR_getxpid);
#else
        return (pid_t) syscall(__NR_getpid);
#endif
}

/* ======================================================================= */

#if !HAVE_KCMP
static inline int missing_kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) {
        return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
}

#  define kcmp missing_kcmp
#endif

/* ======================================================================= */

#if !HAVE_KEYCTL
static inline long missing_keyctl(int cmd, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5) {
        return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);

#  define keyctl missing_keyctl
}

/* ======================================================================= */

static inline key_serial_t missing_add_key(const char *type, const char *description, const void *payload, size_t plen, key_serial_t ringid) {
        return syscall(__NR_add_key, type, description, payload, plen, ringid);

#  define add_key missing_add_key
}

/* ======================================================================= */

static inline key_serial_t missing_request_key(const char *type, const char *description, const char * callout_info, key_serial_t destringid) {
        return syscall(__NR_request_key, type, description, callout_info, destringid);

#  define request_key missing_request_key
}
#endif

/* ======================================================================= */

#if !HAVE_BPF
union bpf_attr;

static inline int missing_bpf(int cmd, union bpf_attr *attr, size_t size) {
        return (int) syscall(__NR_bpf, cmd, attr, size);
}

#  define bpf missing_bpf
#endif

/* ======================================================================= */

#if !HAVE_SET_MEMPOLICY
enum {
        MPOL_DEFAULT,
        MPOL_PREFERRED,
        MPOL_BIND,
        MPOL_INTERLEAVE,
        MPOL_LOCAL,
};

static inline long missing_set_mempolicy(int mode, const unsigned long *nodemask,
                           unsigned long maxnode) {
        return syscall(__NR_set_mempolicy, mode, nodemask, maxnode);
}

#  define set_mempolicy missing_set_mempolicy
#endif

#if !HAVE_GET_MEMPOLICY
static inline long missing_get_mempolicy(int *mode, unsigned long *nodemask,
                           unsigned long maxnode, void *addr,
                           unsigned long flags) {
        return syscall(__NR_get_mempolicy, mode, nodemask, maxnode, addr, flags);
}

#  define get_mempolicy missing_get_mempolicy
#endif

/* ======================================================================= */

#if !HAVE_PIDFD_SEND_SIGNAL
/* since kernel v5.1 (3eb39f47934f9d5a3027fe00d906a45fe3a15fad) */
static inline int missing_pidfd_send_signal(int fd, int sig, siginfo_t *info, unsigned flags) {
        return syscall(__NR_pidfd_send_signal, fd, sig, info, flags);
}

#  define pidfd_send_signal missing_pidfd_send_signal
#endif

/* ======================================================================= */

#if !HAVE_PIDFD_OPEN
/* since kernel v5.3 (7615d9e1780e26e0178c93c55b73309a5dc093d7) */
static inline int missing_pidfd_open(pid_t pid, unsigned flags) {
        return syscall(__NR_pidfd_open, pid, flags);
}

#  define pidfd_open missing_pidfd_open
#endif

/* ======================================================================= */

#if !HAVE_RT_TGSIGQUEUEINFO
static inline int missing_rt_tgsigqueueinfo(pid_t tgid, pid_t tid, int sig, siginfo_t *info) {
        return syscall(__NR_rt_tgsigqueueinfo, tgid, tid, sig, info);
}

#  define rt_tgsigqueueinfo missing_rt_tgsigqueueinfo
#endif

/* ======================================================================= */

#if !HAVE_EXECVEAT
/* since kernel v3.19 (51f39a1f0cea1cacf8c787f652f26dfee9611874) */
static inline int missing_execveat(int dirfd, const char *pathname,
                                   char *const argv[], char *const envp[],
                                   int flags) {
        return syscall(__NR_execveat, dirfd, pathname, argv, envp, flags);
}

#  define execveat missing_execveat
#endif

/* ======================================================================= */

#if !HAVE_CLOSE_RANGE
/* since kernel v5.9 (9b4feb630e8e9801603f3cab3a36369e3c1cf88d) */
static inline int missing_close_range(unsigned first_fd, unsigned end_fd, unsigned flags) {
        /* Kernel-side the syscall expects fds as unsigned integers (just like close() actually), while
         * userspace exclusively uses signed integers for fds. glibc chose to expose it 1:1 however, hence we
         * do so here too, even if we end up passing signed fds to it most of the time. */
        return syscall(__NR_close_range,
                       first_fd,
                       end_fd,
                       flags);
}

#  define close_range missing_close_range
#endif

/* ======================================================================= */

#if !HAVE_SCHED_SETATTR
/* since kernel 3.14 (e6cfc0295c7d51b008999a8b13a44fb43f8685ea) */
static inline ssize_t missing_sched_setattr(pid_t pid, struct sched_attr *attr, unsigned int flags) {
        return syscall(__NR_sched_setattr, pid, attr, flags);
}

#  define sched_setattr missing_sched_setattr
#endif

/* ======================================================================= */

/* glibc does not provide clone() on ia64, only clone2(). Not only that, but it also doesn't provide a
 * prototype, only the symbol in the shared library (it provides a prototype for clone(), but not the
 * symbol in the shared library). */
#if defined(__ia64__)
int __clone2(int (*fn)(void *), void *stack_base, size_t stack_size, int flags, void *arg);
#define HAVE_CLONE 0
#else
/* We know that everywhere else clone() is available, so we don't bother with a meson check (that takes time
 * at build time) and just define it. Once the kernel drops ia64 support, we can drop this too. */
#define HAVE_CLONE 1
#endif

/* ======================================================================= */

#if !HAVE_QUOTACTL_FD
/* since kernel v5.14 (64c2c2c62f92339b176ea24403d8db16db36f9e6) */
static inline int missing_quotactl_fd(int fd, int cmd, int id, void *addr) {
        return syscall(__NR_quotactl_fd, fd, cmd, id, addr);
}

#  define quotactl_fd missing_quotactl_fd
#endif

/* ======================================================================= */

#if !HAVE_SETXATTRAT
/* since kernel v6.13 (6140be90ec70c39fa844741ca3cc807dd0866394) */
struct xattr_args {
        _align_(8) uint64_t value;
        uint32_t size;
        uint32_t flags;
};

static inline int missing_setxattrat(int fd, const char *path, int at_flags, const char *name, const struct xattr_args *args, size_t size) {
        return syscall(__NR_setxattrat, fd, path, at_flags, name, args, size);
}

#  define setxattrat missing_setxattrat
#endif

/* ======================================================================= */

#if !HAVE_REMOVEXATTRAT
/* since kernel v6.13 (6140be90ec70c39fa844741ca3cc807dd0866394) */
static inline int missing_removexattrat(int fd, const char *path, int at_flags, const char *name) {
        return syscall(__NR_removexattrat, fd, path, at_flags, name);
}

#  define removexattrat missing_removexattrat
#endif

1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
2	#pragma once
3
4	/* Missing glibc definitions to access certain kernel APIs */
5
6	#include <errno.h>
7	#include <linux/time_types.h>
8	#include <signal.h>
9	#include <sys/syscall.h>
10	#include <sys/types.h>
11	#include <sys/wait.h>
12	#include <unistd.h>
13
14	#ifdef ARCH_MIPS
15	#include <asm/sgidefs.h>
16	#endif
17
18	#include "macro.h"
19	#include "missing_keyctl.h"
20	#include "missing_sched.h"
21	#include "missing_syscall_def.h"
22
23	/* ======================================================================= */
24
25	#if !HAVE_FCHMODAT2
26	/* since kernel v6.6 (78252deb023cf0879256fcfbafe37022c390762b) */
27	static inline int missing_fchmodat2(int dirfd, const char *path, mode_t mode, int flags) {	24,835✔
28	return syscall(__NR_fchmodat2, dirfd, path, mode, flags);	24,835✔
29	}
30
31	# define fchmodat2 missing_fchmodat2
32	#endif
33
34	/* ======================================================================= */
35
36	#if !HAVE_PIVOT_ROOT
37	static inline int missing_pivot_root(const char new_root, const char put_old) {	2,866✔
38	return syscall(__NR_pivot_root, new_root, put_old);	2,866✔
39	}
40
41	# define pivot_root missing_pivot_root
42	#endif
43
44	/* ======================================================================= */
45
46	#if !HAVE_IOPRIO_GET
47	static inline int missing_ioprio_get(int which, int who) {	2,088✔
48	return syscall(__NR_ioprio_get, which, who);	2,088✔
49	}
50
51	# define ioprio_get missing_ioprio_get
52	#endif
53
54	/* ======================================================================= */
55
56	#if !HAVE_IOPRIO_SET
57	static inline int missing_ioprio_set(int which, int who, int ioprio) {	11✔
58	return syscall(__NR_ioprio_set, which, who, ioprio);	11✔
59	}
60
61	# define ioprio_set missing_ioprio_set
62	#endif
63
64	/* ======================================================================= */
65
66	static inline pid_t raw_getpid(void) {	133,972✔
67	#if defined(__alpha__)
68	return (pid_t) syscall(__NR_getxpid);
69	#else
70	return (pid_t) syscall(__NR_getpid);	133,972✔
71	#endif
72	}
73
74	/* ======================================================================= */
75
76	#if !HAVE_KCMP
77	static inline int missing_kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) {	7,369✔
78	return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);	7,369✔
79	}
80
81	# define kcmp missing_kcmp
82	#endif
83
84	/* ======================================================================= */
85
86	#if !HAVE_KEYCTL
87	static inline long missing_keyctl(int cmd, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5) {	21,993✔
88	return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5);	21,993✔
89
90	# define keyctl missing_keyctl
91	}
92
93	/* ======================================================================= */
94
95	static inline key_serial_t missing_add_key(const char type, const char description, const void *payload, size_t plen, key_serial_t ringid) {	10,323✔
96	return syscall(__NR_add_key, type, description, payload, plen, ringid);	10,323✔
97
98	# define add_key missing_add_key
99	}
100
101	/* ======================================================================= */
102
103	static inline key_serial_t missing_request_key(const char type, const char description, const char * callout_info, key_serial_t destringid) {	12✔
104	return syscall(__NR_request_key, type, description, callout_info, destringid);	12✔
105
106	# define request_key missing_request_key
107	}
108	#endif
109
110	/* ======================================================================= */
111
112	#if !HAVE_BPF
113	union bpf_attr;
114
115	static inline int missing_bpf(int cmd, union bpf_attr *attr, size_t size) {	2,909✔
116	return (int) syscall(__NR_bpf, cmd, attr, size);	2,909✔
117	}
118
119	# define bpf missing_bpf
120	#endif
121
122	/* ======================================================================= */
123
124	#if !HAVE_SET_MEMPOLICY
125	enum {
126	MPOL_DEFAULT,
127	MPOL_PREFERRED,
128	MPOL_BIND,
129	MPOL_INTERLEAVE,
130	MPOL_LOCAL,
131	};
132
133	static inline long missing_set_mempolicy(int mode, const unsigned long *nodemask,	17✔
134	unsigned long maxnode) {
135	return syscall(__NR_set_mempolicy, mode, nodemask, maxnode);	17✔
136	}
137
138	# define set_mempolicy missing_set_mempolicy
139	#endif
140
141	#if !HAVE_GET_MEMPOLICY
142	static inline long missing_get_mempolicy(int mode, unsigned long nodemask,	19✔
143	unsigned long maxnode, void *addr,
144	unsigned long flags) {
145	return syscall(__NR_get_mempolicy, mode, nodemask, maxnode, addr, flags);	19✔
146	}
147
148	# define get_mempolicy missing_get_mempolicy
149	#endif
150
151	/* ======================================================================= */
152
153	#if !HAVE_PIDFD_SEND_SIGNAL
154	/* since kernel v5.1 (3eb39f47934f9d5a3027fe00d906a45fe3a15fad) */
155	static inline int missing_pidfd_send_signal(int fd, int sig, siginfo_t *info, unsigned flags) {
156	return syscall(__NR_pidfd_send_signal, fd, sig, info, flags);
157	}
158
159	# define pidfd_send_signal missing_pidfd_send_signal
160	#endif
161
162	/* ======================================================================= */
163
164	#if !HAVE_PIDFD_OPEN
165	/* since kernel v5.3 (7615d9e1780e26e0178c93c55b73309a5dc093d7) */
166	static inline int missing_pidfd_open(pid_t pid, unsigned flags) {
167	return syscall(__NR_pidfd_open, pid, flags);
168	}
169
170	# define pidfd_open missing_pidfd_open
171	#endif
172
173	/* ======================================================================= */
174
175	#if !HAVE_RT_TGSIGQUEUEINFO
UNCOV 176	static inline int missing_rt_tgsigqueueinfo(pid_t tgid, pid_t tid, int sig, siginfo_t *info) {	×
UNCOV 177	return syscall(__NR_rt_tgsigqueueinfo, tgid, tid, sig, info);	×
178	}
179
180	# define rt_tgsigqueueinfo missing_rt_tgsigqueueinfo
181	#endif
182
183	/* ======================================================================= */
184
185	#if !HAVE_EXECVEAT
186	/* since kernel v3.19 (51f39a1f0cea1cacf8c787f652f26dfee9611874) */
187	static inline int missing_execveat(int dirfd, const char *pathname,
188	char const argv[], char const envp[],
189	int flags) {
190	return syscall(__NR_execveat, dirfd, pathname, argv, envp, flags);
191	}
192
193	# define execveat missing_execveat
194	#endif
195
196	/* ======================================================================= */
197
198	#if !HAVE_CLOSE_RANGE
199	/* since kernel v5.9 (9b4feb630e8e9801603f3cab3a36369e3c1cf88d) */
200	static inline int missing_close_range(unsigned first_fd, unsigned end_fd, unsigned flags) {
201	/* Kernel-side the syscall expects fds as unsigned integers (just like close() actually), while
202	* userspace exclusively uses signed integers for fds. glibc chose to expose it 1:1 however, hence we
203	* do so here too, even if we end up passing signed fds to it most of the time. */
204	return syscall(__NR_close_range,
205	first_fd,
206	end_fd,
207	flags);
208	}
209
210	# define close_range missing_close_range
211	#endif
212
213	/* ======================================================================= */
214
215	#if !HAVE_SCHED_SETATTR
216	/* since kernel 3.14 (e6cfc0295c7d51b008999a8b13a44fb43f8685ea) */
217	static inline ssize_t missing_sched_setattr(pid_t pid, struct sched_attr *attr, unsigned int flags) {
218	return syscall(__NR_sched_setattr, pid, attr, flags);
219	}
220
221	# define sched_setattr missing_sched_setattr
222	#endif
223
224	/* ======================================================================= */
225
226	/* glibc does not provide clone() on ia64, only clone2(). Not only that, but it also doesn't provide a
227	* prototype, only the symbol in the shared library (it provides a prototype for clone(), but not the
228	* symbol in the shared library). */
229	#if defined(__ia64__)
230	int __clone2(int (fn)(void ), void stack_base, size_t stack_size, int flags, void arg);
231	#define HAVE_CLONE 0
232	#else
233	/* We know that everywhere else clone() is available, so we don't bother with a meson check (that takes time
234	* at build time) and just define it. Once the kernel drops ia64 support, we can drop this too. */
235	#define HAVE_CLONE 1
236	#endif
237
238	/* ======================================================================= */
239
240	#if !HAVE_QUOTACTL_FD
241	/* since kernel v5.14 (64c2c2c62f92339b176ea24403d8db16db36f9e6) */
242	static inline int missing_quotactl_fd(int fd, int cmd, int id, void *addr) {	312✔
243	return syscall(__NR_quotactl_fd, fd, cmd, id, addr);	312✔
244	}
245
246	# define quotactl_fd missing_quotactl_fd
247	#endif
248
249	/* ======================================================================= */
250
251	#if !HAVE_SETXATTRAT
252	/* since kernel v6.13 (6140be90ec70c39fa844741ca3cc807dd0866394) */
253	struct xattr_args {
254	_align_(8) uint64_t value;
255	uint32_t size;
256	uint32_t flags;
257	};
258
259	static inline int missing_setxattrat(int fd, const char path, int at_flags, const char name, const struct xattr_args *args, size_t size) {	1✔
260	return syscall(__NR_setxattrat, fd, path, at_flags, name, args, size);	1✔
261	}
262
263	# define setxattrat missing_setxattrat
264	#endif
265
266	/* ======================================================================= */
267
268	#if !HAVE_REMOVEXATTRAT
269	/* since kernel v6.13 (6140be90ec70c39fa844741ca3cc807dd0866394) */
UNCOV 270	static inline int missing_removexattrat(int fd, const char path, int at_flags, const char name) {	×
UNCOV 271	return syscall(__NR_removexattrat, fd, path, at_flags, name);	×
272	}
273
274	# define removexattrat missing_removexattrat
275	#endif

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