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libc: Add fchown, fchmod, and some POSIX feature test macros
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apio 2023-05-19 19:59:20 +02:00
parent 3db0c4fed2
commit dc169124cc
Signed by: apio
GPG Key ID: B8A7D06E42258954
4 changed files with 21 additions and 0 deletions
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3
libc/include/sys/stat.h
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@ -18,6 +18,9 @@ extern "C"
/* Change the mode bits of a file. */ /* Change the mode bits of a file. */
int chmod(const char* path, mode_t mode); int chmod(const char* path, mode_t mode);
/* Change the mode bits of a file descriptor. */
int fchmod(int fd, mode_t mode);
#pragma GCC push_options #pragma GCC push_options
#pragma GCC diagnostic ignored "-Wshadow" #pragma GCC diagnostic ignored "-Wshadow"

6
libc/include/unistd.h
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@ -14,6 +14,9 @@
#define STDOUT_FILENO 1 #define STDOUT_FILENO 1
#define STDERR_FILENO 2 #define STDERR_FILENO 2
#define _POSIX_CHOWN_RESTRICTED 200112L
#define _POSIX_SHELL 200112L
#ifdef __cplusplus #ifdef __cplusplus
extern "C" extern "C"
{ {
@ -55,6 +58,9 @@ extern "C"
/* Change the owner and group of a file. */ /* Change the owner and group of a file. */
int chown(const char* path, uid_t uid, gid_t gid); int chown(const char* path, uid_t uid, gid_t gid);
/* Change the owner and group of a file descriptor. */
int fchown(int fd, uid_t uid, gid_t gid);
/* Replace the current process with another one. On success, does not return. */ /* Replace the current process with another one. On success, does not return. */
int execv(const char* path, char* const* argv); int execv(const char* path, char* const* argv);

6
libc/src/sys/stat.cpp
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@ -18,6 +18,12 @@ extern "C"
__errno_return(rc, int); __errno_return(rc, int);
} }
int fchmod(int fd, mode_t mode)
{
long rc = syscall(SYS_fchmodat, fd, "", mode, AT_EMPTY_PATH);
__errno_return(rc, int);
}
int stat(const char* path, struct stat* st) int stat(const char* path, struct stat* st)
{ {
long rc = syscall(SYS_fstatat, AT_FDCWD, path, st, 0); long rc = syscall(SYS_fstatat, AT_FDCWD, path, st, 0);

6
libc/src/unistd.cpp
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@ -148,6 +148,12 @@ extern "C"
__errno_return(rc, int); __errno_return(rc, int);
} }
int fchown(int fd, uid_t uid, gid_t gid)
{
long rc = syscall(SYS_fchownat, fd, "", uid, gid, AT_EMPTY_PATH);
__errno_return(rc, int);
}
int execv(const char* path, char* const* argv) int execv(const char* path, char* const* argv)
{ {
return execve(path, argv, environ); return execve(path, argv, environ);