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Implement proc_pidinfo(PROC_PIDPATHINFO)
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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 "../fcntl/open.h"
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#include "../unistd/close.h"
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#include "../unistd/read.h"
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#include "../unistd/readlink.h"
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#include "../unistd/getuid.h"
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#include "../unistd/getgid.h"
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#include "../simple.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 "../mach/lkm.h"
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#include "sysctl_proc.h"
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#define LINUX_PR_SET_NAME 15
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static long _proc_pidinfo(int32_t pid, uint32_t flavor, uint64_t arg, void* buffer, int32_t bufsize);
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extern __SIZE_TYPE__ strlen(const char *s);
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extern void *memset(void *s, int c, __SIZE_TYPE__ n);
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extern void *memcpy(void *dest, const void *src, __SIZE_TYPE__ n);
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extern char *strcpy(char *dest, const char *src);
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// thus we can ignore pid and assume we're talking about
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// the current thread.
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int ret;
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ret = LINUX_SYSCALL(__NR_prctl, LINUX_PR_SET_NAME, buffer, 0UL, 0UL, 0UL);
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if (ret < 0)
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return errno_linux_to_bsd(ret);
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static long _proc_pidonfo_uniqinfo(int32_t pid, void* buffer, int32_t bufsize);
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static long _proc_pidinfo_tbsdinfo(int32_t pid, void* buffer, int32_t bufsize);
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static long _proc_pidinfo_pidthreadinfo(int32_t pid, uint64_t thread_handle, void* buffer, int32_t bufsize);
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static long _proc_pidinfo_pathinfo(int32_t pid, void* buffer, int32_t bufsize);
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long _proc_pidinfo(int32_t pid, uint32_t flavor, uint64_t arg, void* buffer, int32_t bufsize)
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{
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case PROC_PIDTHREADINFO:
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{
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return _proc_pidinfo_pidthreadinfo(pid, arg, buffer, bufsize);
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}
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case PROC_PIDPATHINFO:
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{
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return _proc_pidinfo_pathinfo(pid, buffer, bufsize);
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}
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default:
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{
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// Parses line such as:
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// 5568e1914000-5568e1915000 r--p 00024000 08:01 4861625 /usr/bin/less
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bool parse_smaps_firstline(const char* line, struct proc_regioninfo* ri, struct vnode_info_path* vip)
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static bool parse_smaps_firstline(const char* line, struct proc_regioninfo* ri, struct vnode_info_path* vip)
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{
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const char* p;
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const char* minus = NULL;
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return true;
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}
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static long _proc_pidinfo_pathinfo(int32_t pid, void* buffer, int32_t bufsize)
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{
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char path[64];
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__simple_sprintf(path, "/proc/%d/exe", pid);
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memset(buffer, 0, bufsize);
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return sys_readlink(path, buffer, bufsize);
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}