Getting size of files in a directory

Question

I trying to get size of files in a directory by using dirent.h headers. However

stat(ent->d_name, &statbuf)

returns always -1 and I can't get the size properly. What could be the reason?

score 8 · Accepted Answer · edited Jun 30 '14 at 15:42

8

d_name contains the name of the file within that directory. stat wants a name including the directory part, unless it's the current directory.

Make a temporary string containing the full path to the d_name file.

EDIT: Sample

char const * DirName = "/tmp";
....
char * FullName = (char*) malloc(strlen(DirName) + strlen(ent->d_name) + 2); 
strcpy(FullName, DirName);
strcat(FullName, "/");
strcat(FullName, ent->d_name);
stat(FullName, &statbuf);
free(FullName);

edited Jun 30 '14 at 15:42

anilbey

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answered Apr 01 '11 at 14:38

Erik

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After i gave directory name to the stat, it always returned 4096 per file. – thetux4 Apr 01 '11 at 14:49
2

thetux4: You need to give a string consisting of *directory* and *file* to stat. If you give just a directory name, you'll get the size of the directory, which typically starts at 4096 – Erik Apr 01 '11 at 14:50

score 1 · Answer 2 · answered Jun 29 '12 at 14:41

1

I use C++ and I thought the above code would work, but it didn't because it still needed a conversion from void to char*:

char *fullName = (char*) malloc(strlen(path) + strlen(entry->d_name) + 2);

hopefully this can help someone :)

answered Jun 29 '12 at 14:41

mr_kazz

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Getting size of files in a directory

2 Answers2