diff options
Diffstat (limited to 'libblkid/path.c')
| -rw-r--r-- | libblkid/path.c | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/libblkid/path.c b/libblkid/path.c deleted file mode 100644 index 4f955d91c..000000000 --- a/libblkid/path.c +++ /dev/null @@ -1,245 +0,0 @@ -/* - * Simple functions to access files, paths maybe be globally prefixed by a - * global prefix to read data from alternative destination (e.g. /proc dump for - * regression tests). - * - * Taken from lscpu.c - * - * Copyright (C) 2008 Cai Qian <qcai@redhat.com> - * Copyright (C) 2008-2012 Karel Zak <kzak@redhat.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include <stdarg.h> -#include <string.h> -#include <unistd.h> -#include <stdio.h> -#include <inttypes.h> -#include <errno.h> - -#include "all-io.h" -#include "path.h" -#include "nls.h" -#include "c.h" - -static size_t prefixlen; -static char pathbuf[PATH_MAX]; - -static const char * -path_vcreate(const char *path, va_list ap) -{ - if (prefixlen) - vsnprintf(pathbuf + prefixlen, - sizeof(pathbuf) - prefixlen, path, ap); - else - vsnprintf(pathbuf, sizeof(pathbuf), path, ap); - return pathbuf; -} - -static FILE * -path_vfopen(const char *mode, int exit_on_error, const char *path, va_list ap) -{ - FILE *f; - const char *p = path_vcreate(path, ap); - - f = fopen(p, mode); - if (!f && exit_on_error) - err(EXIT_FAILURE, _("cannot open %s"), p); - return f; -} - -static int -path_vopen(int flags, const char *path, va_list ap) -{ - int fd; - const char *p = path_vcreate(path, ap); - - fd = open(p, flags); - if (fd == -1) - err(EXIT_FAILURE, _("cannot open %s"), p); - return fd; -} - -FILE * -path_fopen(const char *mode, int exit_on_error, const char *path, ...) -{ - FILE *fd; - va_list ap; - - va_start(ap, path); - fd = path_vfopen(mode, exit_on_error, path, ap); - va_end(ap); - - return fd; -} - -void -path_read_str(char *result, size_t len, const char *path, ...) -{ - FILE *fd; - va_list ap; - - va_start(ap, path); - fd = path_vfopen("r", 1, path, ap); - va_end(ap); - - if (!fgets(result, len, fd)) - err(EXIT_FAILURE, _("failed to read: %s"), pathbuf); - fclose(fd); - - len = strlen(result); - if (result[len - 1] == '\n') - result[len - 1] = '\0'; -} - -int -path_read_s32(const char *path, ...) -{ - FILE *fd; - va_list ap; - int result; - - va_start(ap, path); - fd = path_vfopen("r", 1, path, ap); - va_end(ap); - - if (fscanf(fd, "%d", &result) != 1) { - if (ferror(fd)) - err(EXIT_FAILURE, _("failed to read: %s"), pathbuf); - else - errx(EXIT_FAILURE, _("parse error: %s"), pathbuf); - } - fclose(fd); - return result; -} - -uint64_t -path_read_u64(const char *path, ...) -{ - FILE *fd; - va_list ap; - uint64_t result; - - va_start(ap, path); - fd = path_vfopen("r", 1, path, ap); - va_end(ap); - - if (fscanf(fd, "%"SCNu64, &result) != 1) { - if (ferror(fd)) - err(EXIT_FAILURE, _("failed to read: %s"), pathbuf); - else - errx(EXIT_FAILURE, _("parse error: %s"), pathbuf); - } - fclose(fd); - return result; -} - -int -path_write_str(const char *str, const char *path, ...) -{ - int fd, result; - va_list ap; - - va_start(ap, path); - fd = path_vopen(O_WRONLY, path, ap); - va_end(ap); - result = write_all(fd, str, strlen(str)); - close(fd); - return result; -} - -int -path_exist(const char *path, ...) -{ - va_list ap; - const char *p; - - va_start(ap, path); - p = path_vcreate(path, ap); - va_end(ap); - - return access(p, F_OK) == 0; -} - -#ifdef HAVE_CPU_SET_T - -static cpu_set_t * -path_cpuparse(int maxcpus, int islist, const char *path, va_list ap) -{ - FILE *fd; - cpu_set_t *set; - size_t setsize, len = maxcpus * 7; - char buf[len]; - - fd = path_vfopen("r", 1, path, ap); - - if (!fgets(buf, len, fd)) - err(EXIT_FAILURE, _("failed to read: %s"), pathbuf); - fclose(fd); - - len = strlen(buf); - if (buf[len - 1] == '\n') - buf[len - 1] = '\0'; - - set = cpuset_alloc(maxcpus, &setsize, NULL); - if (!set) - err(EXIT_FAILURE, _("failed to callocate cpu set")); - - if (islist) { - if (cpulist_parse(buf, set, setsize, 0)) - errx(EXIT_FAILURE, _("failed to parse CPU list %s"), buf); - } else { - if (cpumask_parse(buf, set, setsize)) - errx(EXIT_FAILURE, _("failed to parse CPU mask %s"), buf); - } - return set; -} - -cpu_set_t * -path_read_cpuset(int maxcpus, const char *path, ...) -{ - va_list ap; - cpu_set_t *set; - - va_start(ap, path); - set = path_cpuparse(maxcpus, 0, path, ap); - va_end(ap); - - return set; -} - -cpu_set_t * -path_read_cpulist(int maxcpus, const char *path, ...) -{ - va_list ap; - cpu_set_t *set; - - va_start(ap, path); - set = path_cpuparse(maxcpus, 1, path, ap); - va_end(ap); - - return set; -} - -#endif /* HAVE_CPU_SET_T */ - -void -path_set_prefix(const char *prefix) -{ - prefixlen = strlen(prefix); - strncpy(pathbuf, prefix, sizeof(pathbuf)); - pathbuf[sizeof(pathbuf) - 1] = '\0'; -} |