Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/falloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <sys/ioctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <sys/mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <sys/socket.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <sys/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <sys/sysmacros.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <sys/un.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <sys/eventfd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <poll.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <os.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) static void copy_stat(struct uml_stat *dst, const struct stat64 *src)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	*dst = ((struct uml_stat) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 		.ust_dev     = src->st_dev,     /* device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 		.ust_ino     = src->st_ino,     /* inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 		.ust_mode    = src->st_mode,    /* protection */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 		.ust_nlink   = src->st_nlink,   /* number of hard links */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 		.ust_uid     = src->st_uid,     /* user ID of owner */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 		.ust_gid     = src->st_gid,     /* group ID of owner */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 		.ust_size    = src->st_size,    /* total size, in bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 		.ust_blksize = src->st_blksize, /* blocksize for filesys I/O */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 		.ust_blocks  = src->st_blocks,  /* number of blocks allocated */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 		.ust_atime   = src->st_atime,   /* time of last access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 		.ust_mtime   = src->st_mtime,   /* time of last modification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 		.ust_ctime   = src->st_ctime,   /* time of last change */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	});
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) int os_stat_fd(const int fd, struct uml_stat *ubuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	struct stat64 sbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	CATCH_EINTR(err = fstat64(fd, &sbuf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	if (ubuf != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 		copy_stat(ubuf, &sbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) int os_stat_file(const char *file_name, struct uml_stat *ubuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	struct stat64 sbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	CATCH_EINTR(err = stat64(file_name, &sbuf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	if (ubuf != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 		copy_stat(ubuf, &sbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) int os_access(const char *file, int mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	int amode, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	amode = (mode & OS_ACC_R_OK ? R_OK : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 		(mode & OS_ACC_W_OK ? W_OK : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		(mode & OS_ACC_X_OK ? X_OK : 0) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		(mode & OS_ACC_F_OK ? F_OK : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	err = access(file, amode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) /* FIXME? required only by hostaudio (because it passes ioctls verbatim) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	err = ioctl(fd, cmd, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) /* FIXME: ensure namebuf in os_get_if_name is big enough */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) int os_get_ifname(int fd, char* namebuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	if (ioctl(fd, SIOCGIFNAME, namebuf) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) int os_set_slip(int fd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	int disc, sencap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	disc = N_SLIP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	if (ioctl(fd, TIOCSETD, &disc) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	sencap = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	if (ioctl(fd, SIOCSIFENCAP, &sencap) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int os_mode_fd(int fd, int mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	CATCH_EINTR(err = fchmod(fd, mode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) int os_file_type(char *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	struct uml_stat buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	err = os_stat_file(file, &buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	if (S_ISDIR(buf.ust_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		return OS_TYPE_DIR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	else if (S_ISLNK(buf.ust_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		return OS_TYPE_SYMLINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	else if (S_ISCHR(buf.ust_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		return OS_TYPE_CHARDEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	else if (S_ISBLK(buf.ust_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		return OS_TYPE_BLOCKDEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	else if (S_ISFIFO(buf.ust_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		return OS_TYPE_FIFO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	else if (S_ISSOCK(buf.ust_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		return OS_TYPE_SOCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	else return OS_TYPE_FILE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) int os_file_mode(const char *file, struct openflags *mode_out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	*mode_out = OPENFLAGS();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	err = access(file, W_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	if (err && (errno != EACCES))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	else if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		*mode_out = of_write(*mode_out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	err = access(file, R_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	if (err && (errno != EACCES))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	else if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		*mode_out = of_read(*mode_out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) int os_open_file(const char *file, struct openflags flags, int mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	int fd, err, f = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	if (flags.r && flags.w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		f = O_RDWR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	else if (flags.r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		f = O_RDONLY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	else if (flags.w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		f = O_WRONLY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	else f = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	if (flags.s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		f |= O_SYNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	if (flags.c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		f |= O_CREAT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	if (flags.t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		f |= O_TRUNC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	if (flags.e)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		f |= O_EXCL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	if (flags.a)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		f |= O_APPEND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	fd = open64(file, f, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	if (fd < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	if (flags.cl && fcntl(fd, F_SETFD, 1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		err = -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) int os_connect_socket(const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	struct sockaddr_un sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	int fd, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	sock.sun_family = AF_UNIX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	snprintf(sock.sun_path, sizeof(sock.sun_path), "%s", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	fd = socket(AF_UNIX, SOCK_STREAM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	if (fd < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 		err = -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	err = connect(fd, (struct sockaddr *) &sock, sizeof(sock));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		err = -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		goto out_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) out_close:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) void os_close_file(int fd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) int os_fsync_file(int fd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	if (fsync(fd) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	    return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) int os_seek_file(int fd, unsigned long long offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	unsigned long long actual;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	actual = lseek64(fd, offset, SEEK_SET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	if (actual != offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) int os_read_file(int fd, void *buf, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	int n = read(fd, buf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	if (n < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	return n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) int os_pread_file(int fd, void *buf, int len, unsigned long long offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	int n = pread(fd, buf, len, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	if (n < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	return n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) int os_write_file(int fd, const void *buf, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	int n = write(fd, (void *) buf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	if (n < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	return n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) int os_sync_file(int fd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	int n = fdatasync(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	if (n < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	return n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) int os_pwrite_file(int fd, const void *buf, int len, unsigned long long offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	int n = pwrite(fd, (void *) buf, len, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	if (n < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	return n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) int os_file_size(const char *file, unsigned long long *size_out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	struct uml_stat buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	err = os_stat_file(file, &buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 		printk(UM_KERN_ERR "Couldn't stat \"%s\" : err = %d\n", file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 		       -err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	if (S_ISBLK(buf.ust_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 		int fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 		long blocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 		fd = open(file, O_RDONLY, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 		if (fd < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 			err = -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 			printk(UM_KERN_ERR "Couldn't open \"%s\", "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 			       "errno = %d\n", file, errno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 		if (ioctl(fd, BLKGETSIZE, &blocks) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 			err = -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 			printk(UM_KERN_ERR "Couldn't get the block size of "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 			       "\"%s\", errno = %d\n", file, errno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 			close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 		*size_out = ((long long) blocks) * 512;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 		close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	else *size_out = buf.ust_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) int os_file_modtime(const char *file, long long *modtime)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	struct uml_stat buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	err = os_stat_file(file, &buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 		printk(UM_KERN_ERR "Couldn't stat \"%s\" : err = %d\n", file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 		       -err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	*modtime = buf.ust_mtime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) int os_set_exec_close(int fd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 	CATCH_EINTR(err = fcntl(fd, F_SETFD, FD_CLOEXEC));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) int os_pipe(int *fds, int stream, int close_on_exec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 	int err, type = stream ? SOCK_STREAM : SOCK_DGRAM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	err = socketpair(AF_UNIX, type, 0, fds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	if (!close_on_exec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 	err = os_set_exec_close(fds[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 		goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 	err = os_set_exec_close(fds[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 		goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)  error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	printk(UM_KERN_ERR "os_pipe : Setting FD_CLOEXEC failed, err = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 	       -err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	close(fds[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 	close(fds[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) int os_set_fd_async(int fd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	int err, flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 	flags = fcntl(fd, F_GETFL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 	if (flags < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 	flags |= O_ASYNC | O_NONBLOCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 	if (fcntl(fd, F_SETFL, flags) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 		err = -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 		printk(UM_KERN_ERR "os_set_fd_async : failed to set O_ASYNC "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 		       "and O_NONBLOCK on fd # %d, errno = %d\n", fd, errno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 	if ((fcntl(fd, F_SETSIG, SIGIO) < 0) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 	    (fcntl(fd, F_SETOWN, os_getpid()) < 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 		err = -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 		printk(UM_KERN_ERR "os_set_fd_async : Failed to fcntl F_SETOWN "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 		       "(or F_SETSIG) fd %d, errno = %d\n", fd, errno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) int os_clear_fd_async(int fd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 	int flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 	flags = fcntl(fd, F_GETFL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 	if (flags < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) 	flags &= ~(O_ASYNC | O_NONBLOCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 	if (fcntl(fd, F_SETFL, flags) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) int os_set_fd_block(int fd, int blocking)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) 	int flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) 	flags = fcntl(fd, F_GETFL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) 	if (flags < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) 	if (blocking)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) 		flags &= ~O_NONBLOCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) 		flags |= O_NONBLOCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) 	if (fcntl(fd, F_SETFL, flags) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) int os_accept_connection(int fd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) 	int new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) 	new = accept(fd, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) 	if (new < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) 	return new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) #ifndef SHUT_RD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) #define SHUT_RD 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) #ifndef SHUT_WR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) #define SHUT_WR 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) #ifndef SHUT_RDWR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) #define SHUT_RDWR 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) int os_shutdown_socket(int fd, int r, int w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) 	int what, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) 	if (r && w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) 		what = SHUT_RDWR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) 	else if (r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) 		what = SHUT_RD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) 	else if (w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) 		what = SHUT_WR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) 	err = shutdown(fd, what);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) int os_rcv_fd(int fd, int *helper_pid_out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) 	int new, n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) 	char buf[CMSG_SPACE(sizeof(new))];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) 	struct msghdr msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) 	struct cmsghdr *cmsg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) 	struct iovec iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) 	msg.msg_name = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) 	msg.msg_namelen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) 	iov = ((struct iovec) { .iov_base  = helper_pid_out,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) 				.iov_len   = sizeof(*helper_pid_out) });
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) 	msg.msg_iov = &iov;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) 	msg.msg_iovlen = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) 	msg.msg_control = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) 	msg.msg_controllen = sizeof(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) 	msg.msg_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) 	n = recvmsg(fd, &msg, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) 	if (n < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) 	else if (n != iov.iov_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) 		*helper_pid_out = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) 	cmsg = CMSG_FIRSTHDR(&msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) 	if (cmsg == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) 		printk(UM_KERN_ERR "rcv_fd didn't receive anything, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) 		       "error = %d\n", errno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) 	if ((cmsg->cmsg_level != SOL_SOCKET) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) 	    (cmsg->cmsg_type != SCM_RIGHTS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) 		printk(UM_KERN_ERR "rcv_fd didn't receive a descriptor\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) 	new = ((int *) CMSG_DATA(cmsg))[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) 	return new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) int os_create_unix_socket(const char *file, int len, int close_on_exec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) 	struct sockaddr_un addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) 	int sock, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) 	sock = socket(PF_UNIX, SOCK_DGRAM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) 	if (sock < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) 	if (close_on_exec) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) 		err = os_set_exec_close(sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) 		if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) 			printk(UM_KERN_ERR "create_unix_socket : "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) 			       "close_on_exec failed, err = %d", -err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) 	addr.sun_family = AF_UNIX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) 	snprintf(addr.sun_path, len, "%s", file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) 	err = bind(sock, (struct sockaddr *) &addr, sizeof(addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) 	return sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) void os_flush_stdout(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) 	fflush(stdout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) int os_lock_file(int fd, int excl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) 	int type = excl ? F_WRLCK : F_RDLCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) 	struct flock lock = ((struct flock) { .l_type	= type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) 					      .l_whence	= SEEK_SET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) 					      .l_start	= 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) 					      .l_len	= 0 } );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) 	int err, save;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) 	err = fcntl(fd, F_SETLK, &lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) 	if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) 	save = -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) 	err = fcntl(fd, F_GETLK, &lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) 		err = -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) 	printk(UM_KERN_ERR "F_SETLK failed, file already locked by pid %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) 	       lock.l_pid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) 	err = save;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)  out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) unsigned os_major(unsigned long long dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) 	return major(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) unsigned os_minor(unsigned long long dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) 	return minor(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) unsigned long long os_makedev(unsigned major, unsigned minor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) 	return makedev(major, minor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) int os_falloc_punch(int fd, unsigned long long offset, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) 	int n = fallocate(fd, FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE, offset, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) 	if (n < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) 	return n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) int os_eventfd(unsigned int initval, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) 	int fd = eventfd(initval, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) 	if (fd < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) 	return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) int os_sendmsg_fds(int fd, const void *buf, unsigned int len, const int *fds,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) 		   unsigned int fds_num)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) 	struct iovec iov = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) 		.iov_base = (void *) buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) 		.iov_len = len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) 		char control[CMSG_SPACE(sizeof(*fds) * OS_SENDMSG_MAX_FDS)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) 		struct cmsghdr align;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) 	} u;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) 	unsigned int fds_size = sizeof(*fds) * fds_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) 	struct msghdr msg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) 		.msg_iov = &iov,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) 		.msg_iovlen = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) 		.msg_control = u.control,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) 		.msg_controllen = CMSG_SPACE(fds_size),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) 	struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) 	if (fds_num > OS_SENDMSG_MAX_FDS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) 	memset(u.control, 0, sizeof(u.control));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) 	cmsg->cmsg_level = SOL_SOCKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) 	cmsg->cmsg_type = SCM_RIGHTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) 	cmsg->cmsg_len = CMSG_LEN(fds_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) 	memcpy(CMSG_DATA(cmsg), fds, fds_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) 	err = sendmsg(fd, &msg, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) int os_poll(unsigned int n, const int *fds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) 	/* currently need 2 FDs at most so avoid dynamic allocation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) 	struct pollfd pollfds[2] = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) 	unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) 	if (n > ARRAY_SIZE(pollfds))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) 	for (i = 0; i < n; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) 		pollfds[i].fd = fds[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) 		pollfds[i].events = POLLIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) 	ret = poll(pollfds, n, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) 		return -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) 	/* Return the index of the available FD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) 	for (i = 0; i < n; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) 		if (pollfds[i].revents)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) 			return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) 	return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) }