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S_ISREG in c

Nice Narwhal answered on August 8, 2022 Popularity 4/10 Helpfulness 3/10

answer S_ISREG in c

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S_ISREG in c

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#include <stdio.h>
#include <cygwin/stat.h>
#include <sys/stat.h>

int main()
{
    struct stat sb;
    char *file_path = "./";
    if( stat( file_path, &sb) != -1) // Check the return value of stat
    {
        if( S_ISREG( sb.st_mode ) != 0 )
        {
            printf( "%s is a file", file_path ) ;
        }
        else
        {
            printf( "%s is not a file", file_path ) ;
        }
    }
}
/*
Capturing the type of file and performing Decision Tree actions

   Because tests of the above form are common, additional macros are defined by POSIX to allow the test of the file type in st_mode to be written more concisely:

       S_ISREG(m)  is it a regular file?

       S_ISDIR(m)  directory?

       S_ISCHR(m)  character device?

       S_ISBLK(m)  block device?

       S_ISFIFO(m) FIFO (named pipe)?

       S_ISLNK(m)  symbolic link?  (Not in POSIX.1-1996.)

       S_ISSOCK(m) socket?  (Not in POSIX.1-1996.)

   The preceding code snippet could thus be rewritten as:

       stat(pathname, &sb);
       if (S_ISREG(sb.st_mode)) {
           /* Handle regular file */
       }

      # sourced from https://stackoverflow.com/questions/40163270/what-is-s-isreg-and-what-does-it-do
*/

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Source: stackoverflow.com

Tags: c whatever

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Contributed on Aug 08 2022

Nice Narwhal

0 Answers Avg Quality 2/10

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S_ISREG in c

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Because tests of the above form are common, additional macros are defined by POSIX to allow the test of the file type in st_mode to be written more concisely:

       S_ISREG(m)  is it a regular file?

       S_ISDIR(m)  directory?

       S_ISCHR(m)  character device?

       S_ISBLK(m)  block device?

       S_ISFIFO(m) FIFO (named pipe)?

       S_ISLNK(m)  symbolic link?  (Not in POSIX.1-1996.)

       S_ISSOCK(m) socket?  (Not in POSIX.1-1996.)

   The preceding code snippet could thus be rewritten as:

       stat(pathname, &sb);
       if (S_ISREG(sb.st_mode)) {
           /* Handle regular file */
       }

Popularity 4/10 Helpfulness 1/10 Language whatever

Source: stackoverflow.com

Tags: c whatever

Link to this answer
Share Copy Link

Contributed on Aug 08 2022

Nice Narwhal

0 Answers Avg Quality 2/10

S_ISREG in c

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