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Properly report whether given process is 64-bit (#304)
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-22
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src/kernel/emulation/linux/misc/proc_info.c
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src/kernel/emulation/linux/misc/proc_info.c
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#include "../elfcalls_wrapper.h"
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#include <stdbool.h>
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#include <sys/proc.h>
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#include <lkm/api.h>
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#include "sysctl_proc.h"
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#define LINUX_PR_SET_NAME 15
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info->pbsi_gid = info->pbsi_rgid = info->pbsi_svgid = gid;
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// 32/64 bit detection
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{
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int fd;
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__simple_sprintf(path, "/proc/%d/exe", pid);
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fd = sys_open(path, BSD_O_RDONLY, 0);
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if (fd != -1)
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{
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char magic[5];
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if (sys_read(fd, magic, sizeof(magic)) == sizeof(magic))
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{
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if (magic[0] == 0x7f && magic[1] == 'E' && magic[2] == 'L' && magic[3] == 'F')
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{
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if (magic[4] == 2)
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{
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info->pbsi_flags |= P_LP64;
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}
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}
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}
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sys_close(fd);
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}
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}
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if (lkm_call(NR_task_64bit, (void*)(long)pid) > 0)
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info->pbsi_flags |= P_LP64;
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return 1;
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reterr:
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src/kernel/emulation/linux/misc/sysctl_proc.c
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src/kernel/emulation/linux/misc/sysctl_proc.c
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#include "../fcntl/open.h"
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#include "../simple.h"
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#include "sysctl_proc.h"
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#include <lkm/api.h>
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#ifndef isdigit
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# define isdigit(c) (c >= '0' && c <= '9')
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memset(kinfo, 0, sizeof(*kinfo));
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kinfo->kinfo.kp_proc.p_pid = __simple_atoi(name, NULL);
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if (lkm_call(NR_task_64bit, (void*)(long)kinfo->kinfo.kp_proc.p_pid) > 0)
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kinfo->kinfo.kp_proc.p_flag |= P_LP64;
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if (!read_string(path, stat, sizeof(stat)))
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goto retnull;