Chmod system call

Definición

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La System call chmod() cambia los bits de modos de acceso

#include <sys/stat.h>
 
int chmod(const char *pathname, mode_t mode);
int fchmod(int fd, mode_t mode);

• S_IRUSR (00400) read by owner
• S_IWUSR (00200) write by owner
• S_IXUSR (00100) execute/search by owner (“search” applies for directories, and means that entries within the directory can be accessed)
• S_IRGRP (00040) read by group
• S_IWGRP (00020) write by group
• S_IXGRP (00010) execute/search by group
• S_IROTH (00004) read by others
• S_IWOTH (00002) write by others
• S_IXOTH (00001) execute/search by others

La única diferencia entre ambas system calls es la forma en que se accede al Archivo en cuestión