diff options
| -rw-r--r-- | src/basic/virt.c | 38 |
1 files changed, 28 insertions, 10 deletions
diff --git a/src/basic/virt.c b/src/basic/virt.c index ac42947a4..94c791ca3 100644 --- a/src/basic/virt.c +++ b/src/basic/virt.c @@ -11,6 +11,7 @@ #include "alloc-util.h" #include "dirent-util.h" +//#include "def.h" #include "env-util.h" #include "fd-util.h" #include "fileio.h" @@ -260,21 +261,38 @@ static int detect_vm_hypervisor(void) { } static int detect_vm_uml(void) { - _cleanup_free_ char *cpuinfo_contents = NULL; + _cleanup_fclose_ FILE *f = NULL; int r; /* Detect User-Mode Linux by reading /proc/cpuinfo */ - r = read_full_file("/proc/cpuinfo", &cpuinfo_contents, NULL); - if (r == -ENOENT) { - log_debug("/proc/cpuinfo not found, assuming no UML virtualization."); - return VIRTUALIZATION_NONE; + f = fopen("/proc/cpuinfo", "re"); + if (!f) { + if (errno == ENOENT) { + log_debug("/proc/cpuinfo not found, assuming no UML virtualization."); + return VIRTUALIZATION_NONE; + } + return -errno; } - if (r < 0) - return r; - if (strstr(cpuinfo_contents, "\nvendor_id\t: User Mode Linux\n")) { - log_debug("UML virtualization found in /proc/cpuinfo"); - return VIRTUALIZATION_UML; + for (;;) { + _cleanup_free_ char *line = NULL; + const char *t; + + r = read_line(f, LONG_LINE_MAX, &line); + if (r < 0) + return r; + if (r == 0) + break; + + t = startswith(line, "vendor_id\t: "); + if (t) { + if (startswith(t, "User Mode Linux")) { + log_debug("UML virtualization found in /proc/cpuinfo"); + return VIRTUALIZATION_UML; + } + + break; + } } log_debug("UML virtualization not found in /proc/cpuinfo."); |