该函数查看的值是 struct proc_bsdshortinfo
。它仅限于返回一个 16 字节的字符串,或包含空终止符时的 15 个可读字符。
来自sys/param.h
:
#define MAXCOMLEN 16 /* max command name remembered */
来自sys/proc_info.h
:
struct proc_bsdshortinfo {
uint32_t pbsi_pid; /* process id */
uint32_t pbsi_ppid; /* process parent id */
uint32_t pbsi_pgid; /* process perp id */
uint32_t pbsi_status; /* p_stat value, SZOMB, SRUN, etc */
char pbsi_comm[MAXCOMLEN]; /* upto 16 characters of process name */
uint32_t pbsi_flags; /* 64bit; emulated etc */
uid_t pbsi_uid; /* current uid on process */
gid_t pbsi_gid; /* current gid on process */
uid_t pbsi_ruid; /* current ruid on process */
gid_t pbsi_rgid; /* current tgid on process */
uid_t pbsi_svuid; /* current svuid on process */
gid_t pbsi_svgid; /* current svgid on process */
uint32_t pbsi_rfu; /* reserved for future use*/
};
编辑:要解决这个问题,请获取最后一个路径组件:
pid_t pid = 3051;
char pathBuffer [PROC_PIDPATHINFO_MAXSIZE];
proc_pidpath(pid, pathBuffer, sizeof(pathBuffer));
char nameBuffer[256];
int position = strlen(pathBuffer);
while(position >= 0 && pathBuffer[position] != '/')
{
position--;
}
strcpy(nameBuffer, pathBuffer + position + 1);
printf("path: %s\n\nname:%s\n\n", pathBuffer, nameBuffer);