#define _GNU_SOURCE #include #include #include #include #include #include #include #include #include "die.h" #include "ioops.h" #include "str.h" #include "xutils.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; } r'>author
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authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 21:58:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 21:58:13 -0800
commite7aa8c2eb11ba69b1b69099c3c7bd6be3087b0ba (patch)
treef63906f41699c8e38af9d12b063e2ceab0286ef2 /mm/swap_state.c
parente34bac726d27056081d0250c0e173e4b155aa340 (diff)
parent868c97a846a73e937d835b09b8c885a69df50ec8 (diff)
Merge tag 'docs-4.10' of git://git.lwn.net/linuxHEADmaster
Pull documentation update from Jonathan Corbet: "These are the documentation changes for 4.10. It's another busy cycle for the docs tree, as the sphinx conversion continues. Highlights include: - Further work on PDF output, which remains a bit of a pain but should be more solid now. - Five more DocBook template files converted to Sphinx. Only 27 to go... Lots of plain-text files have also been converted and integrated. - Images in binary formats have been replaced with more source-friendly versions. - Various bits of organizational work, including the renaming of various files discussed at the kernel summit. - New documentation for the device_link mechanism. ... and, of course, lots of typo fixes and small updates" * tag 'docs-4.10' of git://git.lwn.net/linux: (193 commits) dma-buf: Extract dma-buf.rst Update Documentation/00-INDEX docs: 00-INDEX: document directories/files with no docs docs: 00-INDEX: remove non-existing entries docs: 00-INDEX: add missing entries for documentation files/dirs docs: 00-INDEX: consolidate process/ and admin-guide/ description scripts: add a script to check if Documentation/00-INDEX is sane Docs: change sh -> awk in REPORTING-BUGS Documentation/core-api/device_link: Add initial documentation core-api: remove an unexpected unident ppc/idle: Add documentation for powersave=off Doc: Correct typo, "Introdution" => "Introduction" Documentation/atomic_ops.txt: convert to ReST markup Documentation/local_ops.txt: convert to ReST markup Documentation/assoc_array.txt: convert to ReST markup docs-rst: parse-headers.pl: cleanup the documentation docs-rst: fix media cleandocs target docs-rst: media/Makefile: reorganize the rules docs-rst: media: build SVG from graphviz files docs-rst: replace bayer.png by a SVG image ...
Diffstat (limited to 'mm/swap_state.c')