#define _GNU_SOURCE #include #include #include #include #include #include #include #include #include "die.h" #include "dev.h" #include "ioops.h" #include "str.h" int open_or_die(const char *file, int flags) { int ret = open(file, flags); if (ret < 0) panic("Cannot open file %s! %s.\n", file, strerror(errno)); return ret; } int open_or_die_m(const char *file, int flags, mode_t mode) { int ret = open(file, flags, mode); if (ret < 0) panic("Cannot open or create file %s! %s.", file, strerror(errno)); return ret; } void create_or_die(const char *file, mode_t mode) { int fd = open_or_die_m(file, O_WRONLY | O_CREAT, mode); close(fd); } void pipe_or_die(int pipefd[2], int flags) { int ret = pipe2(pipefd, flags); if (ret < 0) panic("Cannot create pipe2 event fd! %s.\n", strerror(errno)); } int tun_open_or_die(char *name, int type) { int fd, ret; short flags; struct ifreq ifr; if (!name) panic("No name provided for tundev!\n"); fd = open_or_die("/dev/net/tun", O_RDWR); memset(&ifr, 0, sizeof(ifr)); ifr.ifr_flags = type; strlcpy(ifr.ifr_name, name, IFNAMSIZ); ret = ioctl(fd, TUNSETIFF, &ifr); if (ret < 0) panic("ioctl screwed up! %s.\n", strerror(errno)); ret = fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK); if (ret < 0) panic("fctnl screwed up! %s.\n", strerror(errno)); flags = device_get_flags(name); flags |= IFF_UP | IFF_RUNNING; device_set_flags(name, flags); return fd; } ssize_t read_or_die(int fd, void *buf, size_t len) { ssize_t ret = read(fd, buf, len); if (ret < 0) { if (errno == EPIPE) die(); panic("Cannot read from descriptor! %s.\n", strerror(errno)); } return ret; } ssize_t write_or_die(int fd, const void *buf, size_t len) { ssize_t ret = write(fd, buf, len); if (ret < 0) { if (errno == EPIPE) die(); panic("Cannot write to descriptor! %s.", strerror(errno)); } return ret; } c40646f5a2e507fcd315a'>treecommitdiff
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authorLinus Torvalds <torvalds@linux-foundation.org>2016-04-18 10:13:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-04-18 10:13:31 -0700
commit95d0c4277c27520cabdc40646f5a2e507fcd315a (patch)
treeadb3af72959e6b502148f42bfe62a19c8618c5b7 /Documentation
parentc3b46c73264b03000d1e18b22f5caf63332547c9 (diff)
parent2fd92273646abad21766ddfbfa00b6f927362308 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky: "A couple of bug fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390: add CPU_BIG_ENDIAN config option s390/spinlock: avoid yield to non existent cpu s390/dcssblk: fix possible deadlock in remove vs. per-device attributes s390/seccomp: include generic seccomp header file s390/pci: add extra padding to function measurement block s390/scm_blk: fix deadlock for requests != REQ_TYPE_FS
Diffstat (limited to 'Documentation')