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| author | huaixv <44743118+huaixv@users.noreply.github.com> | 2021-03-26 13:17:35 +0800 |
|---|---|---|
| committer | Andrew Waterman <andrew@sifive.com> | 2021-03-25 22:20:58 -0700 |
| commit | b7f64fe5584094a6fe65d94d5e2382ff9289cbda (patch) | |
| tree | 0c88526e9d294f56e514ee31e692a0ad6b94e413 | |
| parent | 62bb5daea5ef014616b00a63c106afdd07e68ffd (diff) | |
| download | riscv-pk-b7f64fe5584094a6fe65d94d5e2382ff9289cbda.zip riscv-pk-b7f64fe5584094a6fe65d94d5e2382ff9289cbda.tar.gz riscv-pk-b7f64fe5584094a6fe65d94d5e2382ff9289cbda.tar.bz2 | |
Add `statx` syscall (#234)
| -rw-r--r-- | pk/frontend.h | 2 | ||||
| -rw-r--r-- | pk/syscall.c | 20 | ||||
| -rw-r--r-- | pk/syscall.h | 1 |
3 files changed, 23 insertions, 0 deletions
diff --git a/pk/frontend.h b/pk/frontend.h index 1a6be61..ad51109 100644 --- a/pk/frontend.h +++ b/pk/frontend.h @@ -32,4 +32,6 @@ struct frontend_stat { uint32_t __unused5; }; +#define FRONTEND_STATX_SIZE 256 + #endif diff --git a/pk/syscall.c b/pk/syscall.c index a5e12f2..e6916a2 100644 --- a/pk/syscall.c +++ b/pk/syscall.c @@ -239,6 +239,25 @@ long sys_stat(const char* name, void* st) return sys_fstatat(AT_FDCWD, name, st, 0); } +long sys_statx(int dirfd, const char* name, int flags, unsigned int mask, void * st) +{ + int kfd = at_kfd(dirfd); + if (kfd != -1) { + char buf[FRONTEND_STATX_SIZE]; + + char kname[MAX_BUF]; + if (!strcpy_from_user(kname, name, MAX_BUF)) + return -ENAMETOOLONG; + + size_t name_size = strlen(kname)+1; + + long ret = frontend_syscall(SYS_statx, kfd, kva2pa(kname), name_size, flags, mask, kva2pa(&buf), 0); + memcpy_to_user(st, &buf, sizeof(buf)); + return ret; + } + return -EBADF; +} + long sys_faccessat(int dirfd, const char *name, int mode) { int kfd = at_kfd(dirfd); @@ -451,6 +470,7 @@ long do_syscall(long a0, long a1, long a2, long a3, long a4, long a5, unsigned l [SYS_openat] = sys_openat, [SYS_close] = sys_close, [SYS_fstat] = sys_fstat, + [SYS_statx] = sys_statx, [SYS_lseek] = sys_lseek, [SYS_fstatat] = sys_fstatat, [SYS_linkat] = sys_linkat, diff --git a/pk/syscall.h b/pk/syscall.h index 60355ae..9fcc551 100644 --- a/pk/syscall.h +++ b/pk/syscall.h @@ -54,6 +54,7 @@ #define SYS_set_tid_address 96 #define SYS_set_robust_list 99 #define SYS_madvise 233 +#define SYS_statx 291 #define OLD_SYSCALL_THRESHOLD 1024 #define SYS_open 1024 |