diff options
Diffstat (limited to 'klibc_fixups.c')
| -rw-r--r-- | klibc_fixups.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/klibc_fixups.c b/klibc_fixups.c index 927f2f649a..1241eb7d10 100644 --- a/klibc_fixups.c +++ b/klibc_fixups.c @@ -25,6 +25,7 @@ #include <stdio.h> #include <string.h> #include <ctype.h> +#include <fcntl.h> #include <sys/types.h> #include "klibc_fixups.h" @@ -32,6 +33,8 @@ #define PW_FILE "/etc/passwd" #define GR_FILE "/etc/group" +#define UTMP_FILE "/var/run/utmp" + /* return the id of a passwd style line, selected by the users name */ static unsigned long get_id_by_name(const char *uname, const char *dbfile) @@ -107,4 +110,38 @@ struct group *getgrnam(const char *name) return &gr; } + +int ufd = -1; + +void setutent() +{ + if (ufd < 0) + ufd = open(UTMP_FILE, O_RDONLY); + fcntl(ufd, F_SETFD, FD_CLOEXEC); + lseek(ufd, 0, SEEK_SET); +} + +void endutent() { + if (ufd < 0) + return; + close(ufd); + ufd = -1; +} + +struct utmp *getutent(void) +{ + static struct utmp utmp; + int retval; + + if (ufd < 0) { + setutent(); + if (ufd < 0) + return NULL; + } + retval = read(ufd, &utmp, sizeof(struct utmp)); + if (retval < 1) + return NULL; + return &utmp; +} + #endif |